Hello，
I have some problems about multithreaded intel MKL
1. I use the function MKL_SET_NUM_THREADS(2) to change the thread number. Then I want to check the value of MKL_NUM_THREADS, by using function getnv (mklname, value), mklname = MKL_NUM_THREADS. The value is always 1.
I wonder if the value of MKL_NUM_THREADS will be changed when the parallelization starts.
If so, is there a way to check the value of MKL_NUM_THREADS? How do I know if the value of MKL_NUM_THREADS is really changed after I set it?
2. I use the function MKL_SET_NUM_THREADS(2) to change the thread number. According to the runtime it works and the cpu efficiency is about 200%. The function I test is DGEMM. But when I test DGEQP3 or DGEQPF, the runtime is not changed and the cpu efficiency is always 100%.
I think there is something wrong but I can’t figure it out.
I want to know why.
Is there some examples for me about how to use multithreaded intel MKL?
Thank you ！
OS: Linux, Red Hat 5.5
MKL: compilerpro-12.0.0.084
Ifort: composerxe-2011.0.084