Search found 1392 matches

by Houdini
Thu Sep 21, 2017 3:05 pm
Forum: Computer Chess Club: General Topics
Topic: Houdini 6 Pro and large pages
Replies: 9
Views: 1889

Re: Houdini 6 Pro and large pages

Correct, there is no need to turn off NUMA if you're running on a system with only a single NUMA node.
The NUMA support will only make a difference if Houdini detects at least 2 NUMA nodes (as reported by the appropriate Windows function).
by Houdini
Thu Sep 21, 2017 1:37 pm
Forum: Computer Chess Club: General Topics
Topic: Houdini 6 Pro and large pages
Replies: 9
Views: 1889

Re: Houdini 6 Pro and large pages

No, if Large Pages are available in Windows, Houdini 6 Pro will try to use them.
by Houdini
Thu Sep 21, 2017 1:21 pm
Forum: Computer Chess Club: General Topics
Topic: Houdini 6 Caused Exception Error
Replies: 29
Views: 6707

Re: Houdini 6 Caused Exception Error

Same request: please send me the information so that I can trace this problem and release a fix.
by Houdini
Thu Sep 21, 2017 1:19 pm
Forum: Computer Chess Club: General Topics
Topic: Houdini 6 Pro and large pages
Replies: 9
Views: 1889

Re: Houdini 6 Pro and large pages

Houdini will send the message "info string XXX Large Page Hash". You can also see it in the Task Manager, the Large Page memory is only visible as a Virtual Memory allocation (if I recall correctly). Finally, you can try the "lp" command (after double-clicking on "Houdini 6.exe"). Houdini will try t...
by Houdini
Thu Sep 21, 2017 12:48 pm
Forum: Computer Chess Club: General Topics
Topic: Nodes/sec. with last new CPU's!
Replies: 77
Views: 16455

Re: Nodes/sec. with last new CPU's!

Again, pretty unbelievable. So, going from 20 cores 1 NUMA node to 40 cores 2 NUMA nodes gives 64 +/- 19 ELO points? The doubling in time in these conditions cannot exceed 80-90 ELO points. So, it means 1.5-1.8 effective speedup from 1 node to 2 nodes with 20 cores each. On average, even higher tha...
by Houdini
Thu Sep 21, 2017 12:35 pm
Forum: Computer Chess Club: General Topics
Topic: Nodes/sec. with last new CPU's!
Replies: 77
Views: 16455

Re: Nodes/sec. with last new CPU's!

Werewolf wrote:what was the actual (i.e. all-core turbo) clock speed? Intel?
The server has ES CPUs, they're running at 2.3 GHz all-core.
by Houdini
Thu Sep 21, 2017 10:41 am
Forum: Computer Chess Club: General Topics
Topic: Nodes/sec. with last new CPU's!
Replies: 77
Views: 16455

Re: Nodes/sec. with last new CPU's!

For reference also the node speeds from the starting position after 2 minutes, using Houdini 6 with 4 GB of hash (no Large Pages):
- 20 threads (20 cores): 27.2 MN/s
- 40 threads (40 cores): 52.4 MN/s
- 80 threads (40 cores): 67.3 MN/s
by Houdini
Thu Sep 21, 2017 10:26 am
Forum: Computer Chess Club: General Topics
Topic: Nodes/sec. with last new CPU's!
Replies: 77
Views: 16455

Re: Nodes/sec. with last new CPU's!

The NUMA scaling you want to test will appear in the results of the current 80 threads (on 2 NUMA nodes) vs 20 threads (on 1 NUMA node) test. After 100 games it's (+28 -7 =65) or about +74±40 Elo. So we currently have the following: 40 hyper-threads (on 1 node ) vs 20 threads (on 1 node ): ...
by Houdini
Thu Sep 21, 2017 10:05 am
Forum: Computer Chess Club: General Topics
Topic: Houdini 6 has been released
Replies: 263
Views: 86317

Re: Houdini 6 has been released

Leo wrote:It looks like the learning feature is gone. One of my favorite features.
I've removed the learning feature last year, in Houdini 5.
I wasn't really happy with its implementation and results in Houdini 2/3/4. I may revisit this in the future.
by Houdini
Thu Sep 21, 2017 10:02 am
Forum: Computer Chess Club: General Topics
Topic: Houdini 6 has been released
Replies: 263
Views: 86317

Re: Houdini 6 has been released

Just wondering, did Robert get this idea from Ed's "Speculative Move Principle" in Prodeo 2.2 SMP (which also dedicated one core to the Q3 tactical engine) which essentially does the same thing? Not saying it's bad, just very curious. :) No, I didn't know about Prodeo 2.2 SMP (apparently from last ...