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Forum: Msieve

2022-01-29, 18:38

Replies: 11

Msieve mpi Difficulty

Views: 2,658

Posted By VBCurtis

I thought msieve has a 32-thread max for each...

I thought msieve has a 32-thread max for each instance... are you sure the last run was 40-threaded? msieve may have reverted to 32 threads.

Maybe hyperthreading helps less on these 10-cores than...

Forum: Msieve

2021-06-26, 06:06

Replies: 11

Msieve mpi Difficulty

Views: 2,658

Posted By VBCurtis

Is the machine two 6-core sockets, or a single...

Is the machine two 6-core sockets, or a single 12-core socket? If it's a single chip, I suspect a single 24-threaded run will get you a time pretty close to the MPI run.

If it's two sockets, then...

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