Unable to run grin-miner with more than 128 threads

[kachind]

When I start grin-miner with 129 threads or more, it stalls without crashing and does not complete the first graph. If I set to 128 threads it runs fine.

My system has 256 logical cores, plugin is cuckatoo with avx2 enabled.

[kachind]

Update on this: in fact there is essentially no benefit to using more than 32 threads, GPS stops increasing. Running two 32 thread instances for c29 does double total GPS.

[aaronllowe]

What cpu are you using?

[kachind]

Xeon Phi 7210

[aaronllowe]

Is it the PCIe coprocessor or an actual copy that goes into the socket?

[kachind]

Socketed host processor

[image28]

Looking into something similar, however I'm attempting to run avx_31 and setting with the cuda_32 settings. Have some PCIe Xeon Phi's, but haven't started testing with them yet.

Having this core, which might help you with the above issue if it's related.

mean.hpp:936: void edgetrimmer::trimrename1(u32, u32) [with bool TRIMONV = true; u32 = unsigned int]: Assertion `renames < buckets[NX][0].renameu1' failed.
Aborted (core dumped)

Hope this isn't considered a thread hijack