Peter Bowmar


About Me

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FX Technical Supervisor at DNEG Vancouver


Recent Forum Posts

Mantra vs AMD Threadripper 2990wx Nov. 14, 2018, 1:02 a.m.

At home, Suse 42.3, with 4 core machine (8 virtual) Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz (i.e. it's ancient) I get:

-8 threads: 5:18 .02 secs/thread

So, it's cheaper for me to buy 5 more of these processors and a cheap mobo/ram combo than one of the E5-2687w cpus bare

Unless I'm miscalculating something but I don't think I am…


Peter B

Mantra vs AMD Threadripper 2990wx Nov. 13, 2018, 4:03 p.m.

On Linux (Centos 7.5) with 24 core (48 virtual) Intel(R) Xeon(R) CPU E5-2687W v4 @ 3.00GHz rendering the file to a local disk to avoid network contention.

All times “Total Wall Clock”, all load times 3/4 of a second. Tile size 16 for all.

-48 threads: 01:11
-32 threads: 01:16
-24 threads: 01:22 0.293 secs/thread
-16 threads: 01:52 0.143 secs/thread
-12 threads: 02:27 0.08 secs/thread

In theory, running 2 frames on my local box is optimal with “hyperthreading” giving almost no help.



Peter B

Best to the Ottawa team Sept. 22, 2018, 4:55 p.m.

I know that some of SESI's team are in Ottawa. I hope they and their families are well and unaffected by the storm…