When i offload any program, program runs fine and result is as expected but it always give a segmentation fault error in last. The error is as following
I wrote a MPI Program for running on Xeon phi in native mode.
When I tried to compile the code, the following errors are coming.
$mpicc test.c -o test -mmic
/usr/bin/ld: skipping incompatible /opt/intel//impi/5.0.3.048/mic/lib/libmpifort.so when searching for -lmpifort
/usr/bin/ld: skipping incompatible /opt/intel//impi/5.0.3.048/mic/lib/libmpifort.a when searching for -lmpifort
/usr/bin/ld: cannot find -lmpifort
collect2: ld returned 1 exit status
Please help me out.
Could someone please tell me if there are any approaches to disable the use of part of MC?
from compiler-assisted offload code, I get the following offload report:
[Offload] [HOST] [Tag 2] [CPU Time] 5.053540(seconds)
[Offload] [MIC 0] [Tag 2] [CPU->MIC Data] 1080 (bytes)
[Offload] [MIC 0] [Tag 2] [MIC Time] 6.122002(seconds)
[Offload] [MIC 0] [Tag 2] [MIC->CPU Data] 1032 (bytes)
However, I expected that the total CPU time on the host is always greater than the MIC time on the mic, since it includes the execution time on the mic according to:
I'm working with Xeon Phi and I need to measure data transfer time in offload mode. Offload report only contains the execution time and the amount of data transferred. How can I measure data transfer time for Xeon Phi offloads?
Short version: is this possible?
Long version: I have tried to use aligned allocators either directly or indirectly for a couple of different projects using the Xeon Phi, and have yet to be successful in compiling it x0 My understanding is that the allocator rules / parameters / syntax changed (again) similar to this issue:
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I guess the subject line tells it all. I am specifically interested in the dgemv routine.The only reference I could find about this is the following web page:
where it is mentioned that the ?gemv routines are threaded with OpenMP* for Intel® Core™2 Duo and Intel® Core™ i7 processors. So, there is no threaded implementation of BLAS 2 for the Phi?
Ioannis E. Venetis