# How Can a Tiered Computational Model Solve Latency Issues in Real Time Risk Calculations? ▴ Question

**Published:** 2025-08-06
**Categories:** Question

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## Concept

The imperative for real time risk calculation is a direct consequence of market velocity. As information disseminates and market states shift in microseconds, the capacity to measure and react to portfolio risk in commensurate timeframes becomes a primary determinant of operational viability. The central challenge is a computational one. Complex [risk models](https://prime.greeks.live/area/risk-models/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite), such as those for Value at Risk (VaR) or credit valuation adjustment (CVA), demand significant computational resources.

Executing these calculations on a monolithic system introduces a critical bottleneck, where the time to compute risk exceeds the time in which the market has already changed, rendering the result obsolete upon arrival. This latency is a source of systemic friction, creating a dangerous ambiguity in a firm’s true market exposure.

A [tiered computational model](https://prime.greeks.live/area/tiered-computational-model/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite) directly addresses this friction by architecting a solution around the varying urgency of different risk calculations. It functions as a sophisticated data processing hierarchy, designed to align computational resource allocation with the specific latency requirements of a given task. This architectural approach moves away from a single, brute-force computational engine and toward a distributed, intelligent system.

The model segregates risk calculations into distinct layers, or tiers, each characterized by its own performance profile, from ultra-low latency processing for the most time-sensitive checks to high-throughput batch processing for less urgent, more complex analytics. The core principle is the strategic segmentation of the problem, ensuring that the most critical calculations receive the fastest computational pathways, thereby preserving the integrity of real time decision-making.

> A tiered computational model solves latency by matching the urgency of a risk calculation to a specific processing layer with a corresponding speed.

This structure is analogous to a biological nervous system. The fastest tier acts as a reflex, providing near-instantaneous responses to immediate threats, such as pre-trade compliance checks that must occur in single-digit microseconds. A secondary tier functions like conscious thought, handling more complex, portfolio-level risk aggregations in near-real time, within milliseconds to seconds. The tertiary tier represents deep contemplation and learning, where vast datasets are analyzed overnight in batch processes to refine models, conduct stress tests, and inform long-term strategy.

By classifying and routing computational tasks based on their required decision timeframe, the model ensures that latency-sensitive operations are never queued behind resource-intensive analytics. This systemic design provides a structural solution to the latency problem, enabling a financial institution to maintain a continuous, accurate, and timely understanding of its risk profile even in the most volatile market conditions.

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## Strategy

The strategic implementation of a [tiered computational](https://prime.greeks.live/question/how-do-hardware-acceleration-technologies-like-fpgas-reduce-computational-latency-in-a-clob-system/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite) model is an exercise in architectural precision, designed to create a decisive operational advantage. The framework’s power derives from its explicit recognition that not all risk calculations carry the same temporal weight. By systematically mapping different types of risk analysis to purpose-built computational tiers, an institution can optimize for both speed and depth, ensuring that its response capabilities are perfectly calibrated to the demands of the market.

![Central intersecting blue light beams represent high-fidelity execution and atomic settlement. Mechanical elements signify robust market microstructure and order book dynamics](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-protocol-execution-engine-visualizing-market-microstructure-for-high-fidelity-alpha-generation-via-prime-os.jpg)

## The Three Tiers of Computational Risk Architecture

The model is typically organized into three distinct tiers, each with a specific role, latency profile, and underlying technology. This separation of concerns is the strategic foundation of the entire system.

- **Tier 1 The Reflex Arc** This tier is engineered for extreme low-latency processing, measured in nanoseconds to single-digit microseconds. Its sole purpose is to handle critical-path calculations that are synchronous with the trade lifecycle. These are go/no-go decisions where speed is the paramount concern. This includes [pre-trade risk checks](https://prime.greeks.live/area/pre-trade-risk-checks/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite), margin calculations, and compliance verifications. The computational workload is streamlined and specific, often deployed on specialized hardware like Field-Programmable Gate Arrays (FPGAs) located physically close to the matching engine to minimize network transit time.

- **Tier 2 The Real Time Cortex** This layer operates in near-real time, with latency targets ranging from milliseconds to a few seconds. It is responsible for aggregating and analyzing risk at a broader level, such as for a trading desk or an entire portfolio. Calculations here are more complex than in Tier 1 and include intra-day VaR, profit and loss (P&L) swings, and real-time alerts on position concentration. This tier often utilizes in-memory databases and GPU-accelerated computing to process streaming market data and position updates rapidly.

- **Tier 3 The Analytical Engine** This tier is designed for high-throughput, offline computation and has no stringent latency requirements. Its function is to perform deep, computationally intensive analytics that inform strategy and refine the models used in the faster tiers. This includes end-of-day full portfolio revaluations, historical stress testing, backtesting of new trading algorithms, and machine learning model training. This layer is typically built on distributed computing grids or scalable cloud infrastructure, allowing for massive parallel processing of large datasets.

> By stratifying computations, the model ensures that mission-critical, low-latency tasks are never delayed by resource-intensive analytical jobs.

![A central, metallic, complex mechanism with glowing teal data streams represents an advanced Crypto Derivatives OS. It visually depicts a Principal's robust RFQ protocol engine, driving high-fidelity execution and price discovery for institutional-grade digital asset derivatives](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-protocol-execution-engine-8.jpg)

## How Does Tiering Align with Capital Allocation Strategies?

A tiered model provides a granular and dynamic view of risk, which directly enhances the efficiency of [capital allocation](https://prime.greeks.live/area/capital-allocation/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite). Real time risk metrics from Tier 2 allow a firm to manage its capital with greater precision. For instance, if a portfolio’s risk profile, updated in real time, shows a lower-than-expected VaR, the system can automatically release excess capital held as a buffer, making it available for other opportunities. Conversely, a sudden spike in market volatility, detected and processed by Tier 2, can trigger an immediate increase in capital reserves to cover the heightened risk.

This dynamic allocation prevents the two undesirable extremes ▴ inefficient over-allocation of capital on one hand, and dangerous under-capitalization on the other. The model transforms risk management from a static, end-of-day accounting exercise into a dynamic, intra-day strategic function.

The following table provides a comparative analysis of the strategic positioning of each computational tier.

| Attribute | Tier 1 Reflex Arc | Tier 2 Real Time Cortex | Tier 3 Analytical Engine |
| --- | --- | --- | --- |
| Primary Objective | Prevent catastrophic failure | Enable dynamic tactical adjustment | Inform long-term strategy |
| Latency Target | | 1 millisecond – 5 seconds | Minutes to hours |
| Scope of Analysis | Single order or trade | Trading book or portfolio | Entire firm or historical market data |
| Data Granularity | Tick-level data | Streaming position and market data | Large historical datasets |
| Typical Hardware | FPGAs, specialized ASICs | GPUs, in-memory databases, high-core CPUs | Distributed CPU grids, cloud computing |
| Key Use Case | Pre-trade risk and compliance checks | Intra-day VaR, P&L, exposure monitoring | End-of-day reporting, stress testing, model backtesting |

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## Execution

The execution of a tiered [computational model](https://prime.greeks.live/question/what-are-the-primary-drivers-of-computational-complexity-in-an-internal-model-method/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite) requires a disciplined approach to [systems architecture](https://prime.greeks.live/area/systems-architecture/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite), data engineering, and quantitative modeling. It is the physical and logical manifestation of the strategy, translating theoretical tiers into a functioning, high-performance risk engine. Success hinges on the seamless integration of disparate technologies and the intelligent routing of data and computational requests.

![A cutaway view reveals an advanced RFQ protocol engine for institutional digital asset derivatives. Intricate coiled components represent algorithmic liquidity provision and portfolio margin calculations](https://options.greeks.live/wp-content/uploads/2025/07/prime-os-rfq-protocol-engine-digital-asset-derivatives-core-internal-mechanism-visualized.jpg)

## The Architectural Blueprint

The foundation of the execution phase is a clear architectural blueprint that specifies the technologies, data pathways, and communication protocols connecting the tiers. This is not a monolithic build; it is the integration of specialized components into a cohesive system.

The data pipeline is the circulatory system of this architecture. It must be designed to deliver the right data to the right tier with the appropriate latency. This involves using different messaging technologies ▴ ultra-low latency protocols like raw UDP or specialized middleware for Tier 1, and scalable message queues like Kafka for distributing data to Tiers 2 and 3. The system must ensure data consistency across tiers, so that the real-time view in Tier 2 can be reconciled with the deep analytics of Tier 3.

> A successful execution moves beyond technology selection to focus on the intelligent orchestration of data flow between computational tiers.

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## What Are the Primary Integration Challenges?

Integrating the tiers presents significant technical hurdles. The primary challenge is creating a coherent data model and communication fabric that allows information to flow seamlessly between the ultra-fast hardware of Tier 1, the real-time processing clusters of Tier 2, and the vast data stores of Tier 3. This requires robust API design and a messaging layer capable of handling immense throughput with differentiated quality of service. Another challenge is model consistency.

The simplified risk models running on FPGAs in Tier 1 must be calibrated and validated against the more comprehensive models running in Tiers 2 and 3. Any divergence between these models could lead to inconsistent risk assessments, undermining the integrity of the entire system. This necessitates a rigorous governance and deployment process for all risk models across the architecture.

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## Quantitative Data Flow and Modeling

The allocation of specific models and latency budgets to each tier is a critical execution step. It involves a careful trade-off between model complexity and computational speed. The following tables illustrate how these allocations are structured in a practical implementation.

| Trade Lifecycle Stage | Governing Tier | Latency Budget (microseconds) | Core Calculation | Technology |
| --- | --- | --- | --- | --- |
| Order Ingress & Validation | Tier 1 | 1-2 µs | Fat-finger checks, format validation | FPGA |
| Pre-Trade Risk Check | Tier 1 | 2-5 µs | Margin availability, position limits | FPGA |
| Execution Confirmation | Tier 2 | 500-1,000 µs | Initial P&L calculation, position update | In-Memory DB / GPU |
| Desk-Level Risk Aggregation | Tier 2 | 1,000-50,000 µs | Real-time Greeks, VaR delta update | GPU Cluster |
| Full Portfolio Revaluation | Tier 3 | >10,000,000 µs | Full VaR, CVA, Stress Scenarios | CPU Grid / Cloud |

This table details how the latency budget is partitioned across the lifecycle of a single trade, with responsibility passing from the fastest to the slower tiers as the immediacy requirement decreases. The next table maps common financial models to their appropriate computational tier.

- **Initial Assessment and Scoping** The first step involves a thorough analysis of all existing risk calculations performed by the firm. Each calculation must be profiled for its computational intensity, data dependencies, and, most importantly, its business-critical latency. This produces a definitive inventory of tasks to be allocated across the tiers.

- **Technology Stack Selection** Based on the assessment, the appropriate hardware and software are selected for each tier. This involves evaluating FPGA vendors for Tier 1, GPU and in-memory database providers for Tier 2, and cloud or on-premise grid solutions for Tier 3. The decision is driven by a performance-per-cost analysis tailored to the specific calculation types.

- **Data Fabric Implementation** A high-throughput, low-latency data fabric is engineered to serve as the system’s backbone. This involves deploying messaging buses and establishing a canonical data model to ensure consistency. Data dictionaries and schemas are rigorously enforced.

- **Model Stratification and Deployment** Quantitative teams work to stratify their risk models. This may involve creating simplified, deterministic versions of complex models for Tier 1 implementation. Models are then deployed to their designated tiers using a unified CI/CD pipeline that includes rigorous testing and validation stages.

- **Orchestration and Routing Logic** An intelligent routing layer is built to direct computational requests to the appropriate tier. This orchestration engine is a key piece of intellectual property, containing the logic that balances load, manages priorities, and ensures that latency-sensitive requests always have a clear path to execution.

- **Continuous Monitoring and Calibration** Once live, the entire system is placed under constant monitoring. Performance metrics, from FPGA clock cycles in Tier 1 to batch job completion times in Tier 3, are tracked. The system is continuously calibrated to adjust for changing market conditions and new risk models.

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## References

- Cao, Yupeng, et al. “RiskLabs ▴ Predicting Financial Risk Using Large Language Model based on Multimodal and Multi-Sources Data.” arXiv preprint arXiv:2404.07452, 2024.

- Harris, Larry. Trading and Exchanges ▴ Market Microstructure for Practitioners. Oxford University Press, 2003.

- Lehalle, Charles-Albert, and Sophie Laruelle. Market Microstructure in Practice. World Scientific Publishing, 2013.

- Aldridge, Irene. High-Frequency Trading ▴ A Practical Guide to Algorithmic Strategies and Trading Systems. John Wiley & Sons, 2013.

- NVIDIA Corporation. “Benchmarking Deep Neural Networks for Low-Latency Trading and Rapid Backtesting on NVIDIA GPUs.” NVIDIA Technical Blog, 2023.

- Bless Network. “Bless Network ▴ Transforming Edge Computing Through Decentralized Infrastructure.” White Paper, 2025.

- Garrido, Yuri. “How StanChart balances AI-powered innovation with security.” Computer Weekly, 2025.

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## Reflection

![A precise central mechanism, representing an institutional RFQ engine, is bisected by a luminous teal liquidity pipeline. This visualizes high-fidelity execution for digital asset derivatives, enabling precise price discovery and atomic settlement within an optimized market microstructure for multi-leg spreads](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-core-execution-system-1.jpg)

## From Calculation to Systemic Control

The implementation of a tiered computational framework moves an institution’s risk management function from a reactive, observational process to a proactive, systemic control mechanism. The knowledge gained through this architecture is a component in a larger system of institutional intelligence. The true potential of this model is realized when its outputs are integrated into automated decision-making engines, creating a feedback loop where [real-time risk](https://prime.greeks.live/area/real-time-risk/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite) awareness directly informs and refines execution strategy. This transforms the very concept of risk management.

It becomes an active, offensive capability, a tool for seizing opportunities with a clear and present understanding of the associated exposures. The ultimate objective is to architect a system where the speed of insight consistently outpaces the speed of the market, providing a durable and decisive operational edge. How will you architect your systems to not just measure risk, but to control it?

![A central metallic mechanism, an institutional-grade Prime RFQ, anchors four colored quadrants. These symbolize multi-leg spread components and distinct liquidity pools](https://options.greeks.live/wp-content/uploads/2025/07/high-fidelity-digital-asset-derivatives-rfq-engine-prime-os.jpg)

## Glossary

<a href="https://prime.greeks.live/area/risk-models/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
![Institutional-grade infrastructure supports a translucent circular interface, displaying real-time market microstructure for digital asset derivatives price discovery. Geometric forms symbolize precise RFQ protocol execution, enabling high-fidelity multi-leg spread trading, optimizing capital efficiency and mitigating systemic risk](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-request-for-quote-protocol-high-fidelity-execution-market-microstructure-intelligence-layer.jpg)

## Risk Models

Meaning ▴ Risk Models are computational frameworks designed to systematically quantify and predict potential financial losses within a portfolio or across an enterprise under various market conditions. </a><a href="https://prime.greeks.live/area/tiered-computational-model/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
![Dark precision apparatus with reflective spheres, central unit, parallel rails. Visualizes institutional-grade Crypto Derivatives OS for RFQ block trade execution, driving liquidity aggregation and algorithmic price discovery](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-protocol-execution-system.jpg)

## Tiered Computational Model

Meaning ▴ A Tiered Computational Model defines a structured system where processing functions are distributed across multiple, distinct layers, each optimized for specific operational characteristics such as latency, data volume, or computational intensity. </a><a href="https://prime.greeks.live/question/how-do-hardware-acceleration-technologies-like-fpgas-reduce-computational-latency-in-a-clob-system/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
![Interconnected translucent rings with glowing internal mechanisms symbolize an RFQ protocol engine. This Principal's Operational Framework ensures High-Fidelity Execution and precise Price Discovery for Institutional Digital Asset Derivatives, optimizing Market Microstructure and Capital Efficiency via Atomic Settlement](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-engine-high-fidelity-execution.jpg)

## Tiered Computational

FPGAs reduce latency by replacing sequential software instructions with dedicated hardware circuits, processing data at wire speed. </a><a href="https://prime.greeks.live/area/pre-trade-risk-checks/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
![Beige module, dark data strip, teal reel, clear processing component. This illustrates an RFQ protocol's high-fidelity execution, facilitating principal-to-principal atomic settlement in market microstructure, essential for a Crypto Derivatives OS](https://options.greeks.live/wp-content/uploads/2025/07/institutional-crypto-derivatives-rfq-protocol-execution-engine.jpg)

## Pre-Trade Risk Checks

Meaning ▴ Pre-Trade Risk Checks are automated validation mechanisms executed prior to order submission, ensuring strict adherence to predefined risk parameters, regulatory limits, and operational constraints within a trading system. </a><a href="https://prime.greeks.live/area/capital-allocation/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
![Geometric planes and transparent spheres represent complex market microstructure. A central luminous core signifies efficient price discovery and atomic settlement via RFQ protocol](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-execution-microstructure-4.jpg)

## Capital Allocation

Meaning ▴ Capital Allocation refers to the strategic and systematic deployment of an institution's financial resources, including cash, collateral, and risk capital, across various trading strategies, asset classes, and operational units within the digital asset derivatives ecosystem. </a><a href="https://prime.greeks.live/area/systems-architecture/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
![Abstract geometric forms depict a Prime RFQ for institutional digital asset derivatives. A central RFQ engine drives block trades and price discovery with high-fidelity execution](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-engine-optimizing-market-microstructure-for-high-fidelity-execution.jpg)

## Systems Architecture

Meaning ▴ Systems Architecture defines the foundational conceptual model and operational blueprint that structures a complex computational system. </a><a href="https://prime.greeks.live/question/what-are-the-primary-drivers-of-computational-complexity-in-an-internal-model-method/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
![Central teal cylinder, representing a Prime RFQ engine, intersects a dark, reflective, segmented surface. This abstractly depicts institutional digital asset derivatives price discovery, ensuring high-fidelity execution for block trades and liquidity aggregation within market microstructure](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-protocol-engine-core-framework.jpg)

## Computational Model

The primary drivers of computational complexity in an IMM are model sophistication, data volume, and intense regulatory validation. </a><a href="https://prime.greeks.live/area/real-time-risk/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
![An abstract, precision-engineered mechanism showcases polished chrome components connecting a blue base, cream panel, and a teal display with numerical data. This symbolizes an institutional-grade RFQ protocol for digital asset derivatives, ensuring high-fidelity execution, price discovery, multi-leg spread processing, and atomic settlement within a Prime RFQ](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-protocol-precision-execution-1.jpg)

## Real-Time Risk

Meaning ▴ Real-time risk constitutes the continuous, instantaneous assessment of financial exposure and potential loss, dynamically calculated based on live market data and immediate updates to trading positions within a system. </a>

**Tags:** [FPGA in Finance](https://options.greeks.live/area/fpga-in-finance/), [Risk Models](https://options.greeks.live/area/risk-models/), [Latency Mitigation](https://options.greeks.live/area/latency-mitigation/), [High-Frequency Trading](https://options.greeks.live/area/high-frequency-trading/), [Algorithmic Trading Infrastructure](https://options.greeks.live/area/algorithmic-trading-infrastructure/), [Pre-Trade Risk](https://options.greeks.live/area/pre-trade-risk/)	

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High-frequency trading strategies impact quote rejection rates by increasing order volume and message traffic.

- 
### [How Do Pre-Trade Controls Impact Market Maker Competition in Crypto Options RFQ?](https://options.greeks.live/question/how-do-pre-trade-controls-impact-market-maker-competition-in-crypto-options-rfq/)
![Intersecting teal cylinders and flat bars, centered by a metallic sphere, abstractly depict an institutional RFQ protocol. This engine ensures high-fidelity execution for digital asset derivatives, optimizing market microstructure, atomic settlement, and price discovery across aggregated liquidity pools for Principal Market Makers.](https://options.greeks.live/wp-content/uploads/2025/07/optimized-rfq-protocol-for-institutional-digital-asset-derivatives.jpg)

Sophisticated pre-trade controls redefine crypto options RFQ competition by shifting focus from speed to refined risk calibration and capital efficiency.

- 
### [What Are the Primary Technological Components Required to Operate a Systematic Internaliser Effectively?](https://options.greeks.live/question/what-are-the-primary-technological-components-required-to-operate-a-systematic-internaliser-effectively/)
![Stacked, multi-colored discs symbolize an institutional RFQ Protocol's layered architecture for Digital Asset Derivatives. This embodies a Prime RFQ enabling high-fidelity execution across diverse liquidity pools, optimizing multi-leg spread trading and capital efficiency within complex market microstructure.](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-protocol-stack-for-high-fidelity-execution.jpg)

Operating a Systematic Internaliser effectively requires an integrated, low-latency technology stack for pricing, risk, and regulatory reporting.

- 
### [How Do Quote Window Durations Impact Liquidity Provider Risk Models?](https://options.greeks.live/question/how-do-quote-window-durations-impact-liquidity-provider-risk-models/)
![An abstract composition featuring two overlapping digital asset liquidity pools, intersected by angular structures representing multi-leg RFQ protocols. This visualizes dynamic price discovery, high-fidelity execution, and aggregated liquidity within institutional-grade crypto derivatives OS, optimizing capital efficiency and mitigating counterparty risk.](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-protocols-optimizing-aggregated-liquidity-and-multi-leg-execution-via-advanced-market-microstructure.jpg)

Dynamic quote window durations critically manage adverse selection and inventory risk, optimizing liquidity provision and capital efficiency for market makers.

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---

**Original URL:** https://options.greeks.live/question/how-can-a-tiered-computational-model-solve-latency-issues-in-real-time-risk-calculations/
