Search found 567 matches

by smatovic
Thu Jun 20, 2019 6:29 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: My new Laptop in 2029...
Replies: 1
Views: 64

My new Laptop in 2029...

The display of my Lenovo T61 laptop from 2008 went broken, so I had the choice to buy a new Lappy for some thousand bucks, or to repair and upgrade my oldie for some hundred. I decided to repair and upgrade, and it is remarkable how well 10 years old hardware still suits for surfing the web, doing o...
by smatovic
Tue Jun 11, 2019 7:01 am
Forum: Computer Chess Club: General Topics
Topic: GPU rumors - AMD Navi and Nvidia GTX 1160
Replies: 7
Views: 1011

Re: GPU rumors - AMD Navi and Nvidia GTX 1160

AMD unveiled their 7nm Navi based Radeon RX 5700 GPUs to be released on 07/07, https://www.anandtech.com/show/14412/amd-teases-first-navi-gpu-products-rx-5700-series-in-july-25-improved-perf https://www.anandtech.com/show/14528/amd-announces-radeon-rx-5700-xt-rx-5700-series https://en.wikipedia.org/...
by smatovic
Thu Jun 06, 2019 5:14 am
Forum: Computer Chess Club: General Topics
Topic: about the term of equal hardware
Replies: 42
Views: 3966

Re: about the term of equal hardware

Okay, another try, let us assume the best software is those which makes best use of the transistors given on a specific chip. So let us compare the transistor count and the clock frequency of TCEC hardware: Nvidia RTX 2080 TI: 18.6 billion transistors clocked with max 1.545 GHz Nvidia RTX 2080: 13....
by smatovic
Thu Jun 06, 2019 4:51 am
Forum: Computer Chess Club: General Topics
Topic: about the term of equal hardware
Replies: 42
Views: 3966

Re: about the term of equal hardware

We can measure in watts. We can measure in dollars. We can measure in flop But we will always be comparing apples to oranges. GPUs give enormous floating point operation counts. GPUs are really, really cheap for the compute power you get. GPUs use a lot of watts. But these two systems play chess ve...
by smatovic
Wed Jun 05, 2019 11:43 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: strategies for finding slowdows in lazy smp
Replies: 26
Views: 1021

Re: strategies for finding slowdows in lazy smp

Currently my main thread is the master-thread. If that one decides the search is finished, then all others terminate as well. And what happens if a helper finishes its search? It goes on with the next iteration if applicable. Else it'll busy-loop :oops: until the main-thread catches up. Hmm, not su...
by smatovic
Wed Jun 05, 2019 11:33 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: strategies for finding slowdows in lazy smp
Replies: 26
Views: 1021

Re: strategies for finding slowdows in lazy smp

flok wrote:
Wed Jun 05, 2019 11:27 am
Currently my main thread is the master-thread. If that one decides the search is finished, then all others terminate as well.
And what happens if a helper finishes its search?

--
Srdja
by smatovic
Wed Jun 05, 2019 11:20 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: strategies for finding slowdows in lazy smp
Replies: 26
Views: 1021

Re: strategies for finding slowdows in lazy smp

Now my question is: what are strategies for finding what causes this slow down? - implement an benchsmp command to reproduce results quick on the command line - as always in engine debugging, turn every extension off, bench only with an basic engine and turn stepwise extensions on, you can also ben...
by smatovic
Wed Jun 05, 2019 8:44 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: strategies for finding slowdows in lazy smp
Replies: 26
Views: 1021

Re: strategies for finding slowdows in lazy smp

Now my question is: what are strategies for finding what causes this slow down? - implement an benchsmp command to reproduce results quick on the command line - as always in engine debugging, turn every extension off, bench only with an basic engine and turn stepwise extensions on, you can also ben...
by smatovic
Tue Jun 04, 2019 5:09 pm
Forum: Computer Chess Club: General Topics
Topic: The Mac Pro is back - finally
Replies: 11
Views: 510

Re: The Mac Pro is back - finally

Hmm, Apple ships them with an 2*2 AMD Radeon Pro Vega II GPU option, up to 16384 cores, 128 GB HBM, 56.4 TFLOPs fp32, 112.8 TFLOPs fp16 in sum, so the new Mac Pro competes with Nvidia's DGX-1 Station with 4 Voltas, and these are pricey, 37K to 52K Euros... so the question is, which dude will tune L...
by smatovic
Tue Jun 04, 2019 12:04 pm
Forum: Computer Chess Club: General Topics
Topic: The Mac Pro is back - finally
Replies: 11
Views: 510

Re: The Mac Pro is back - finally

Hmm, Apple ships them with an 2*2 AMD Radeon Pro Vega II GPU option, up to 16384 cores, 128 GB HBM, 56.4 TFLOPs fp32, 112.8 TFLOPs fp16 in sum, so the new Mac Pro competes with Nvidia's DGX-1 Station with 4 Voltas, and these are pricey, 37K to 52K Euros... so the question is, which dude will tune L...