Posts by Matt Kowal

1) Message boards : Number crunching : GPU Utilization (Message 1094) Posted 20 Feb 2019 by Matt Kowal Post: That wasn't the question. Please read the question. The conversation was about maximizing utilization, and one way to do that is by running more WUs and reducing kernel size. Your question wasn't very clear. Given the context and direction of the conversation would would assume the anonymous "it" would refer to kernel size and not utilization. My apologies. A good start to reducing utilization would simply be to run fewer WUs at a reduced kernel size. It's up to you do decide how low is acceptable.
2) Message boards : Number crunching : GPU Utilization (Message 1091) Posted 19 Feb 2019 by Matt Kowal Post: What should we reduce it to? You can reduce kernel size in your project preferences: https://sech.me/boinc/Amicable/prefs.php?subset=project
3) Message boards : Number crunching : Countermeasures for Increased CPU Time (Message 1055) Posted 11 Jan 2019 by Matt Kowal Post: It's because Boinc is written as a 32bit program and that's the limit it can show, it USES all of the memory until some Project comes up with a greater than 4gb workunit itself, which SO FAR none have done yet. A 64bit version has been discussed but I don't know how far along it is. Is that really the case? BOINC has been offering 64bit versions for years although a 32bit download is still available. Additionally many projects offer 32bit and 64bit applications although Amicable Numbers only offers 64bit applications. You can peruse the download offerings and see both x86 and x86_64 offerings: https://boinc.berkeley.edu/download_all.php OR https://boinc.berkeley.edu/dl/
4) Message boards : Number crunching : Countermeasures for Increased CPU Time (Message 1021) Posted 13 Dec 2018 by Matt Kowal Post: Thank you for sharing this. I am running 2 tasks on my (aging!) 7970 as GPU utilization had dropped to ~93%. Matt I had a look at your tasks. In terms of run-time am I correct in saying that you are returning 2 results roughly every 45 minutes on your 7970? That is correct. GPU is a 7970 @ 985Mhz/1425mhz I run 3x Numberfields@home tasks and the other core feeds 2x amicable numbers tasks on the 7970 and 1x Primegrid PPS Sieve task on a GTX 1060 3gb. Utilization is ~90% on a 2500k
5) Message boards : Number crunching : Countermeasures for Increased CPU Time (Message 999) Posted 27 Nov 2018 by Matt Kowal Post: Is it really necessary to assign a full CPU core to each task even with the decrease in usage more tasks entail? It likely depends on the GPU/CPU, but for my AMD 7970/i5-2500k I reserve only 0.5 CPU for each task.
6) Message boards : Number crunching : Countermeasures for Increased CPU Time (Message 995) Posted 27 Nov 2018 by Matt Kowal Post: Thank you for sharing this. I am running 2 tasks on my (aging!) 7970 as GPU utilization had dropped to ~93%.
7) Message boards : Number crunching : Amicable Numbers has slowed down (Message 978) Posted 17 Nov 2018 by Matt Kowal Post: Ok, so how do I avoid OpenCL so I am not wasting my computer time and electricity for less work? OpenCL tasks on this project are for GPUs. Your system (https://sech.me/boinc/Amicable/results.php?hostid=36634) is only utilizing the CPU on this project, so no changes are needed.
8) Message boards : Number crunching : WU size or difficulty change? (Message 631) Posted 6 Oct 2017 by Matt Kowal Post: For me tasks the are averaging at least twice as long as before with no increase in credit. I like collecting those useless credits so I'll be moving most of my boxes elsewhere...good luck I'll try to remember to wave when, sometime next year, I pass you in project credits! For science!
9) Message boards : Number crunching : WU size or difficulty change? (Message 628) Posted 3 Oct 2017 by Matt Kowal Post: My 7970 was running kernel 21 and outputting results in 1500-2500 seconds for most of September. Recently the WUs have been taking 2700-4000 seconds with some requiring 5000+. I've experimented with kernel 22, but the results seem similar. Have there been any changes to the WUs or is the issue my drivers, settings, etc?
10) Message boards : Number crunching : The credits have halved since June 8 (Message 471) Posted 14 Jun 2017 by Matt Kowal Post: It might be related to the current workunits. View this thread: https://sech.me/boinc/Amicable/forum_thread.php?id=72
11) Message boards : Number crunching : GPU version tweaking for current WUs (Message 465) Posted 9 Jun 2017 by Matt Kowal Post: Thank you, Sergei. I have updated the config for my AMD 7970 to run 2 WUs concurrently.
12) Message boards : Number crunching : Any expected downtime preceeding the double checking process or the changeover to the 10^20 search? (Message 447) Posted 22 May 2017 by Matt Kowal Post: Does the project expect any downtime preceding the double checking process or for the changeover to the 10^20 search?
13) Message boards : Number crunching : AMD Ryzen performance (Message 443) Posted 6 May 2017 by Matt Kowal Post: Thank you for the benchmarks. I have shared them in the /r/BOINC thread BOINC Performance on AMD Ryzen.
14) Message boards : Random stuff : Does this project release source code? (Message 115) Posted 12 Feb 2017 by Matt Kowal Post: If so, under what license? Thank you.