facebookarchive/caffe2

cpuid_test fails on Power8

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#1,422 opened on Nov 3, 2017

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bughelp wanted

Description

I just built caffe2 on Ubuntu 16.04.3 on Power8 LE, using all defaults except disabling NNPACK in the top CMakeLists.txt. It builds and installs fine, but when running "make test" it fails on the cpuid_test.

I hope MMX isn't really a requirement for caffe2.. ?

All other tests are successful.

Contributor guide

Tech stack
cpp
Domain
machine learningtesting
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
C++ programmingCMake build system
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
Investigate the cpuid test source file to determine why it fails on Power8. The issue is likely due to x86 specific cpuid instruction usage. Consider adding architecture detection or conditional compilation to skip the test on non x86 platforms. Reference the CMake configuration for platform specific settings.