AVX — 3 Technical Articles

Feb 14, 2022 · Databases

MongoDB 5.0 Installation Fails on CPUs Without AVX Support and How to Fix It

When installing MongoDB 5.0 on a CentOS 7.2 server, the mongo and mongod commands abort with an "Illegal instruction" error because the CPU lacks AVX support, and the article explains how to diagnose this issue, verify CPU capabilities, and resolve it by using AVX‑compatible hardware.

AVXCPU compatibilityMongoDB

0 likes · 7 min read

MongoDB 5.0 Installation Fails on CPUs Without AVX Support and How to Fix It

Baidu Intelligent Testing

Dec 9, 2015 · Fundamentals

Investigation of Query‑Diff Precision Differences Caused by CPU Instruction‑Set Variations (AVX vs SSE)

A detailed case study shows how a 1% precision difference discovered by query‑diff testing was traced to CPU instruction‑set discrepancies (AVX vs SSE), highlighting the impact of hardware‑level floating‑point optimizations on algorithmic results and providing practical debugging and mitigation guidelines.

AVXCPUPerformance Optimization

0 likes · 13 min read

Investigation of Query‑Diff Precision Differences Caused by CPU Instruction‑Set Variations (AVX vs SSE)

Baidu Intelligent Testing

Dec 4, 2015 · Fundamentals

Debugging Floating‑Point Precision Differences in Query‑Diff Tests: A CPU Instruction Set Case Study (AVX vs SSE)

This article details a query‑diff test that revealed a 1% floating‑point precision difference after a module upgrade, describes the systematic investigation of environment, compilation, and CPU instruction‑set variations (AVX vs SSE), and presents conclusions and recommendations for preventing similar issues.

AVXCPUDebugging

0 likes · 10 min read

Debugging Floating‑Point Precision Differences in Query‑Diff Tests: A CPU Instruction Set Case Study (AVX vs SSE)