Message boards :
Number crunching :
GPU-only
Message board moderation
Author | Message |
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Dave Send message Joined: 29 Mar 02 Posts: 778 Credit: 25,001,396 RAC: 0 |
Correct me if I'm wrong but surely you achieve a greater average if all your units are done via the GPU, rather than have slower CPU ones going even though they are at the same time, totalling 3 in parallel. I'm suspending my 0s + 1s etc to get the older stuff done & notice that the GPU is ripping its way through the 3s etc nicely whereas the CPU has 'dried'-up due to all other units suspended. Am I doing the right thing? |
perryjay Send message Joined: 20 Aug 02 Posts: 3377 Credit: 20,676,751 RAC: 0 |
If I remember correctly, you won't request new work if you have units suspended. Plus, even though the CPU's are slower they are still cutting down their share. My little 9500GT is doing two in the time it takes one of my CPUs to do one so it is effectively doubling my output. PROUD MEMBER OF Team Starfire World BOINC |
Josef W. Segur Send message Joined: 30 Oct 99 Posts: 4504 Credit: 1,414,761 RAC: 0 |
Correct me if I'm wrong but surely you achieve a greater average if all your units are done via the GPU, rather than have slower CPU ones going even though they are at the same time, totalling 3 in parallel. I'm suspending my 0s + 1s etc to get the older stuff done & notice that the GPU is ripping its way through the 3s etc nicely whereas the CPU has 'dried'-up due to all other units suspended. Am I doing the right thing? You don't need both CPUs free to feed one GPU. Telling BOINC to only use 50% of your dual CPUs would keep one free to service the GPU while using the other to do additional work. Or using eFMer Priority to boost the CUDA application's priority may give similar GPU crunching speed even with two CPU tasks also running. Joe |
N3CZZ Send message Joined: 29 Mar 10 Posts: 8 Credit: 1,222,230 RAC: 0 |
So would adding a GPU to my Celeron 5XX MHz server in the garage be a worthwhile expenditure? It woluld be easier than migrating the server to a newer machine. It has a PS big enough to handle the extra load. It only serves up music occasionally and does SETI in it's spare time. I was thinking about a used $200 2X 3.0 GHz server to replace it. |
gizbar Send message Joined: 7 Jan 01 Posts: 586 Credit: 21,087,774 RAC: 0 |
So would adding a GPU to my Celeron 5XX MHz server in the garage be a worthwhile expenditure? It woluld be easier than migrating the server to a newer machine. It has a PS big enough to handle the extra load. It only serves up music occasionally and does SETI in it's spare time. I was thinking about a used $200 2X 3.0 GHz server to replace it. It would, if the machine has a PCIE-X (x8 or preferably x16) slot for it to go in. Can't give any more help unless you provide more details about your system. Depends what you are looking for, GPU-wise. A proud GPU User Server Donor! |
perryjay Send message Joined: 20 Aug 02 Posts: 3377 Credit: 20,676,751 RAC: 0 |
Giz, I believe he can also find just PCI cards floating around if he feels like looking. That is if he doesn't have PCI-E. PROUD MEMBER OF Team Starfire World BOINC |
hiamps Send message Joined: 23 May 99 Posts: 4292 Credit: 72,971,319 RAC: 0 |
Correct me if I'm wrong but surely you achieve a greater average if all your units are done via the GPU, rather than have slower CPU ones going even though they are at the same time, totalling 3 in parallel. I'm suspending my 0s + 1s etc to get the older stuff done & notice that the GPU is ripping its way through the 3s etc nicely whereas the CPU has 'dried'-up due to all other units suspended. Am I doing the right thing? I believe you are right, I run 3 CPU's and seem to be higher than when running 4. Often wondered if I should stop CPU's but lately it wouldn't matter as I can't get enough work anyways.... Official Abuser of Boinc Buttons... And no good credit hound! |
Donald L. Johnson Send message Joined: 5 Aug 02 Posts: 8240 Credit: 14,654,533 RAC: 20 |
I'm suspending my 0s + 1s etc to get the older stuff done & notice that the GPU is ripping its way through the 3s etc nicely whereas the CPU has 'dried'-up due to all other units suspended. Am I doing the right thing? I think that suspending the _0 and _1 Tasks to concentrate on the _2s, _3s and higher is a great idea - helps clear out the Pendings for the folks who did the original Tasks, and also helps thin out the Database. I try to do that when I get Resends. Since you have Tasks suspended, your BOINC Manager does turn work fetch "OFF". Even though the CPU usually takes longer to process a Task than the GPUs, if you have _0 or _1 Tasks that can run on the CPU, you might want to "UnSuspend" one at a time, unless that will slow down your GPUs. Donald Infernal Optimist / Submariner, retired |
perryjay Send message Joined: 20 Aug 02 Posts: 3377 Credit: 20,676,751 RAC: 0 |
I don't have to worry about suspending anything. They sent me the first hundred or so as 2s,3s,and 4s. The 2s were sent out originally on Aug. 21st, most of the 3s and 4s were originally sent out on July 5th, timed out on Aug. 21st and timed out again from that batch on the 6th of this month. Then they had to wait through the outage before they got sent out again. Bad days in Blackrock on those days. I just hope not too many of those turn out to be ghosts again. I'm pretty sure I got most of them but don't want to fool around trying to find out right now with the server problems and all. PROUD MEMBER OF Team Starfire World BOINC |
N3CZZ Send message Joined: 29 Mar 10 Posts: 8 Credit: 1,222,230 RAC: 0 |
Guys, thanks for letting me butt in with my question before. My server has no PCI-E slot. Is there a regular PCI card that would be appropriate that you know of or is there a place in these forums that would be better to address the issue. My other machine has the PCI-Ex slot, though.Thanks. |
Zeus Fab3r Send message Joined: 17 Jan 01 Posts: 649 Credit: 275,335,635 RAC: 597 |
Guys, thanks for letting me butt in with my question before. My server has no PCI-E slot. Is there a regular PCI card that would be appropriate that you know of or is there a place in these forums that would be better to address the issue. My other machine has the PCI-Ex slot, though.Thanks. You can find some useful links here: Upgrading old P3 warhorse with Nvidia cards/CUDA and here: Are there any PCI or AGP Cuda cards? [edit]Simple forum search won't hurt. ;-)[/edit] Who the hell is General Failure and why is he reading my harddisk?¿ |
Joel Send message Joined: 31 Oct 08 Posts: 104 Credit: 4,838,348 RAC: 13 |
I definitely recommend using the eFMer Priority tool to get the GPUs running at capacity and drawing whatever CPU resources they need. I use this tool to keep my GPUs operating at about 95% of capacity, which allows my CPUs to complete their WUs somewhat slower but without interfering with the CUDA runs. |
N3CZZ Send message Joined: 29 Mar 10 Posts: 8 Credit: 1,222,230 RAC: 0 |
I did the forum search after my last post and found a whole big list of cards known to work w/ seti and went shopping right away. I'll look at the links you sent. Thanks much for letting me butt in and for your help. Bye now! |
gizbar Send message Joined: 7 Jan 01 Posts: 586 Credit: 21,087,774 RAC: 0 |
Giz, I believe he can also find just PCI cards floating around if he feels like looking. That is if he doesn't have PCI-E. You're right, of course. That'll teach me to post really quickly when I'm supposed to be getting ready for work! :o) Giz. A proud GPU User Server Donor! |
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