build fails on ppc64le

[janfrode]

I failed to build on ppc64le because of:

~/caffe2-1/third_party/NNPACK$ cmake .
CMake Error at CMakeLists.txt:30 (MESSAGE):
Unrecognized CMAKE_SYSTEM_PROCESSOR = ppc64le

It works if I add ppc64le to line 29 of CMakeLists.txt:

ELSEIF(NOT CMAKE_SYSTEM_PROCESSOR MATCHES "^(i686|x86_64|armv5te|armv7-a|armv7l|aarch64|ppc64le)$")

[janfrode]

But maybe this isn't enough.. I see now that it's failing on some test. i.e.:

$ make test
Running tests...
Test project /home/janfrode/caffe2-1/third_party/NNPACK
Start 1: convolution-output-smoketest
1/34 Test #1: convolution-output-smoketest ............***Failed 6.17 sec

[----------] Global test environment tear-down
[==========] 52 tests from 3 test cases ran. (6166 ms total)
[ PASSED ] 50 tests.
[ FAILED ] 2 tests, listed below:
[ FAILED ] WT8x8.few_output_channels
[ FAILED ] WT8x8.few_output_channels_with_relu

and then:

  Start  2: convolution-output-alexnet

2/34 Test #2: convolution-output-alexnet ..............***Failed 334.10 sec

[==========] 22 tests from 3 test cases ran. (334097 ms total)
[ PASSED ] 16 tests.
[ FAILED ] 6 tests, listed below:
[ FAILED ] WT8x8.conv3
[ FAILED ] WT8x8.conv3_with_relu
[ FAILED ] WT8x8.conv4
[ FAILED ] WT8x8.conv4_with_relu
[ FAILED ] WT8x8.conv5
[ FAILED ] WT8x8.conv5_with_relu

I obviously have no idea what I'm doing, so if someone would be interested in guiding me through debugging this, that would be much appreciated.

[Maratyszcza]

Try to configure with -DNNPACK_BACKEND="psimd", maybe that helps

[Maratyszcza]

Generally, NNPACK on PPC64 is not supported, and some planned future changes will make it impossible to build on PPC64.

[janfrode]

Ok, thanks. I'll just disable NNPACK in my caffe2 build then.