我正在我的桌面上测试一个简单的MPI程序(Ubuntu LTS 16.04 /Intel®Core™i3-6100U CPU @ 2.30GHz×4/gcc 4.8.5/OpenMPI 3.0.0)并且mpirun不会让我使用全部我机器上的核心(4).当我跑:
$ mpirun -n 4 ./test2
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我收到以下错误:
--------------------------------------------------------------------------
There are not enough slots available in the system to satisfy the 4 slots
that were requested by the application:
./test2
Either request fewer slots for your application, or make more slots available
for use.
--------------------------------------------------------------------------
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但如果我跑:
$ mpirun -n 2 ./test2
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一切正常.
我从其他答案中看到我可以检查处理器的数量
cat /proc/cpuinfo | grep processor | wc -l
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这告诉我,我有4个处理器.我对超额订阅不感兴趣,我只是希望能够使用我所有的处理器.有人可以帮忙吗?