ubuntu15.04安装caffe出现问题？

Question

make 进行到最后一步 make runtest 出现问题，求助！！！命令行报错如下：

 [----------] Global test environment tear-down
[==========] 1887 tests from 255 test cases ran. (476334 ms total)
[  PASSED  ] 1880 tests.
[  FAILED  ] 7 tests, listed below:
[  FAILED  ] SGDSolverTest/0.TestSnapshotShare, where TypeParam = caffe::CPUDevice<float>
[  FAILED  ] AdaGradSolverTest/0.TestSnapshotShare, where TypeParam = caffe::CPUDevice<float>
[  FAILED  ] NesterovSolverTest/0.TestSnapshot, where TypeParam = caffe::CPUDevice<float>
[  FAILED  ] NesterovSolverTest/0.TestSnapshotShare, where TypeParam = caffe::CPUDevice<float>
[  FAILED  ] AdaDeltaSolverTest/0.TestSnapshotShare, where TypeParam = caffe::CPUDevice<float>
[  FAILED  ] AdamSolverTest/0.TestSnapshotShare, where TypeParam = caffe::CPUDevice<float>
[  FAILED  ] RMSPropSolverTest/0.TestSnapshotShare, where TypeParam = caffe::CPUDevice<float>

 7 FAILED TESTS
Makefile:523: recipe for target 'runtest' failed

Answer 1

Update: I found the cause of my issue mentioned above (not the original issue in this PR): Intel MKL's float point operations (such as matrix multiplication) are non-deterministic by default on my laptop.

After export MKL_CBWR=AUTO, the results are deterministic and those snapshot test failures disappear.

Reference on deterministic property of Intel MKL:

http://community.hartree.stfc.ac.uk/access/content/group/admin/HPC%20Training/Intel%20training%202013/a2_intel_mkl_overview.pdf