AMD, Intel disagreements 'red alert'

3 次查看（过去 30 天）
Martin
Martin 2018-8-24
编辑： Ned Flanders 2019-12-2
Hello, I have like 4 Intel Matlab clients and 1 powerful AMD Matlab client (Ryzen 1950, overclocked). I need to do heavy calculations (e.g. LSTM) with the AMD client, but still be able to reproduce the results on the other clients namely Intel (be aware that rand is resetted, this one is not the hurdle)
My problem is, it does not produce the same. All Intel agrees with each other, but not with the AMD and of course vice versa.
Is there any way to make AMD agree with Intel, or Intel agree with AMD processors with regards to LSTM or likely other Neural Network computations?
  2 个评论
dpb
dpb 2018-8-24
Down to the LSB level, probably not.
What kind of discrepancy are we talking about here?
Martin
Martin 2018-8-24
With regards to the discrepancy: I get results between -1 to 1. On AMD I can easily get e.g. -0.2 and 0.3 on Intel...

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Ned Flanders
Ned Flanders 2019-12-2
编辑：Ned Flanders 2019-12-2
You should test the workaround for AMD CPUs to use the AVX2 codepath. Its possible that with Intel using AVX2 and AMD using SSE codepaths, the results might somewhat differ for specific opperations. Also, AVX2 is much faster on your TR box.
See: https://www.reddit.com/r/matlab/comments/dxn38s/howto_force_matlab_to_use_a_fast_codepath_on_amd/

类别

在 Help Center 和 File Exchange 中查找有关 Deep Learning Toolbox 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by