With a single instance it is only running at 88% load. Correct on default setting, I changed them back to run 2 of these. I also went back and looked at some APs runs on the first day that 7.04 was released before I added the command line. Most ran faster than that 52 minutes but there were some that ran much slower and threw off that average. If I go with "my gut" then I'd say closer to 44. Sorry about that, only machine with a single 750 in it isn't here, it's at home. Would be several days before I could get to it.

Edit.. If you look at APv7 tasks on that computer go to Sept 19 anywhere after 09:00:00 UTC..any AP with a run time longer the 2500 seconds is a 750Ti. The times are ranging from 40 minute up to 48 minutes. I can't remember how long I waited before switching to 2 APs but I think it was several hours later that day.

The APv6 must not have had any Blanking, else it would have been much slower than v7.
Running Multiple instances in v6 will benefit when running Blanked APs because the GPU is not under Full load when running Blanked tasks, so the other instance can use the spare cycles. When there aren't any spare cycles, there is no benefit.
Try comparing your 750 running a tuned single instance of APv7 running at 98% with two instances of APv7 and see how it works.

TBar. Single instance of APv7 on 750Ti is 52 minutes average (no command lines). 2 instances of AP v7 on 750Ti is 1 hr 14 min without any command lines.

Is the Single instance running at 98-99% load? If I'm looking at the correct machine, you are running the Default settings, http://setiweb.ssl.berkeley.edu/beta/results.php?hostid=72572&offset=40&show_names=0&state=0&appid=
http://setiweb.ssl.berkeley.edu/beta/result.php?resultid=17659070
Run time: 40 min 20 sec
-unroll default value used: 5
-ffa_block default value used: 1280
-ffa_block_fetch default value used: 640
The card will only run at 100% load. If a Single task is using 98-99% load, there isn't much left. Comparing a Single task at 80-90% load to a double at 100% load wouldn't be accurate.
It would be nice if it were in a machine with a few less cards...

The APv6 must not have had any Blanking, else it would have been much slower than v7.
Running Multiple instances in v6 will benefit when running Blanked APs because the GPU is not under Full load when running Blanked tasks, so the other instance can use the spare cycles. When there aren't any spare cycles, there is no benefit.
Try comparing your 750 running a tuned single instance of APv7 running at 98% with two instances of APv7 and see how it works.

TBar. Single instance of APv7 on 750Ti is 52 minutes average (no command lines). 2 instances of AP v7 on 750Ti is 1 hr 14 min without any command lines.

Give me an hour and you will have your result.

Edit... we are off topic here but since we started here I'll finish here.

The time to complete for 2 v7.04 APs on my 750s are about the same as for V6... 1 hr 20 each. My 2 cents

Edit...it actually might be faster, closer to 1 hour but I'm notice some "interesting" variables that affect the time. More to do with my set up than anything seti side.

Zalster

The APv6 must not have had any Blanking, else it would have been much slower than v7.
Running Multiple instances in v6 will benefit when running Blanked APs because the GPU is not under Full load when running Blanked tasks, so the other instance can use the spare cycles. When there aren't any spare cycles, there is no benefit.
Try comparing your 750 running a tuned single instance of APv7 running at 98% with two instances of APv7 and see how it works.

The time to complete for 2 v7.04 APs on my 750s are about the same as for V6... 1 hr 20 each. My 2 cents

Because you are testing stock too.
Just wait for the new read me.

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With each crime and every kindness we birth our future.

The time to complete for 2 v7.04 APs on my 750s are about the same as for V6... 1 hr 20 each. My 2 cents

Edit...it actually might be faster, closer to 1 hour but I'm notice some "interesting" variables that affect the time. More to do with my set up than anything seti side.

Zalster

Of course running 2 instances of AP on GPU is better for RAC.
Also more efficient.

The only advantage with a low end card is when running Blanked APs. Soon, the problem with Blanked APs will be history. I would like to see a comparison with a low end card running AP_v7.

Not true, it depends on the CPU not GPU.

Have you tested multiple instances on a low end card with AP_v7? With the Single instance tuned to run at 98% load?

Yes, sure.
I tested 8 different NV GPU`s last week with AP7.

Can you point to the results?

Not yet.
All were offline benches of course.
Results are stored on my server.

As soon as AP7 is released on Main I think we will see a number of comparisons. Remember, it must be a low end card compared with the Single instance tuned to run at 98-99% load.

The last thing i`ll say about it here is dont forget you are testing stock at beta.
I`m testing optimised for month.

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With each crime and every kindness we birth our future.

Of course running 2 instances of AP on GPU is better for RAC.
Also more efficient.

The only advantage with a low end card is when running Blanked APs. Soon, the problem with Blanked APs will be history. I would like to see a comparison with a low end card running AP_v7.

Not true, it depends on the CPU not GPU.

Have you tested multiple instances on a low end card with AP_v7? With the Single instance tuned to run at 98% load?

Yes, sure.
I tested 8 different NV GPU`s last week with AP7.

Can you point to the results?

Not yet.
All were offline benches of course.
Results are stored on my server.

As soon as AP7 is released on Main I think we will see a number of comparisons. Remember, it must be a low end card compared with the Single instance tuned to run at 98-99% load.

Of course running 2 instances of AP on GPU is better for RAC.
Also more efficient.

The only advantage with a low end card is when running Blanked APs. Soon, the problem with Blanked APs will be history. I would like to see a comparison with a low end card running AP_v7.

Not true, it depends on the CPU not GPU.

Have you tested multiple instances on a low end card with AP_v7? With the Single instance tuned to run at 98% load?

Yes, sure.
I tested 8 different NV GPU`s last week with AP7.

Can you point to the results?

Not yet.
All were offline benches of course.
Results are stored on my server.

---

With each crime and every kindness we birth our future.

Of course running 2 instances of AP on GPU is better for RAC.
Also more efficient.

The only advantage with a low end card is when running Blanked APs. Soon, the problem with Blanked APs will be history. I would like to see a comparison with a low end card running AP_v7.

Not true, it depends on the CPU not GPU.

Have you tested multiple instances on a low end card with AP_v7? With the Single instance tuned to run at 98% load?

Yes, sure.
I tested 8 different NV GPU`s last week with AP7.

Can you point to the results?

Of course running 2 instances of AP on GPU is better for RAC.
Also more efficient.

The only advantage with a low end card is when running Blanked APs. Soon, the problem with Blanked APs will be history. I would like to see a comparison with a low end card running AP_v7.

Not true, it depends on the CPU not GPU.

Have you tested multiple instances on a low end card with AP_v7?

Yes, sure.
I tested 8 different NV GPU`s last week with AP7.

---

With each crime and every kindness we birth our future.

The proportion of processing done by the GPU is inversely proportional to the amount of blanking. So for a very highly blanked task very little use is made of the GPU and lots of use is made of the CPU - thus a high performance GPU is little better (in terms of overall processing time) than a low end one.

(For low blanked AP tasks most of the work is done on the GPU, and thus a high-end GPU will show a marked improvement in overall processing time)

---

Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?

Of course running 2 instances of AP on GPU is better for RAC.
Also more efficient.

The only advantage with a low end card is when running Blanked APs. Soon, the problem with Blanked APs will be history. I would like to see a comparison with a low end card running AP_v7.

Not true, it depends on the CPU not GPU.

Have you tested multiple instances on a low end card with AP_v7? With the Single instance tuned to run at 98% load?

Your GTX 750 isn't going to gain anything by running 2 APs at a time anyway.

Of course running 2 instances of AP on GPU is better for RAC.
Also more efficient.

The only advantage with a low end card is when running Blanked APs. Soon, the problem with Blanked APs will be history. I would like to see a comparison with a low end card running AP_v7.

I'm a bit confused now.....

The 750 will benefit running 2 instances for sure.
No doubt.

---

With each crime and every kindness we birth our future.

Of course running 2 instances of AP on GPU is better for RAC.
Also more efficient.

The only advantage with a low end card is when running Blanked APs. Soon, the problem with Blanked APs will be history. I would like to see a comparison with a low end card running AP_v7.

Not true, it depends on the CPU not GPU.

---

With each crime and every kindness we birth our future.

Your GTX 750 isn't going to gain anything by running 2 APs at a time anyway.

Of course running 2 instances of AP on GPU is better for RAC.
Also more efficient.

The only advantage with a low end card is when running Blanked APs. Soon, the problem with Blanked APs will be history. I would like to see a comparison with a low end card running AP_v7.

I'm a bit confused now.....

---

Of course running 2 instances of AP on GPU is better for RAC.
Also more efficient.

The only advantage with a low end card is when running Blanked APs. Soon, the problem with Blanked APs will be history. I would like to see a comparison with a low end card running AP_v7.

Of course running 2 instances of AP on GPU is better for RAC.
Also more efficient.

---

With each crime and every kindness we birth our future.

Did you try to run GPU only ?

I try this right now. Today the computer did not crash. But as I said, it didn't crash every day, so I have to try this for a few days before I can be sure.

I ran a couple Dual core machines for a while with two GPU cards. Whenever I tried running 2 GPU APs and 1 CPU AP everything was fine until the GPUs hit 2 Highly Blanked APs at the same time. Then the CPU spent a lot of time thrashing at 100%. If your system is the least bit unstable it will probably crash. I didn't have any problem running 1 AP, 1 MB, and 1 CPU AP. I would suggest you try running just 1 GPU AP at a time. Your GTX 750 isn't going to gain anything by running 2 APs at a time anyway.

Here is the ReadMe_AstroPulse_OpenCL_NV.txt;

For best performance it is important to free 2 CPU cores running multiple instances.
Freeing at least 1 CPU core is necessity to get enough GPU usage.*
Running multiple cards in a system requires freeing another CPU core...

Yes it had its reasons i`ve added this to the read me`s.

I gave this a try today and until now it worked, running fine for 11 hours without crashing. But will just running 1 AP task at a time on GPU really give the same RAC as running two tasks? I know that with MB running two tasks at a time is definitly faster. So it's different on AP? Would be great if it really is so, because then I could do Seti and vLHC without crashing. I would prefer this to running 2 tasks on GPU and nothing on CPU because I really like CERN and would like to contibute there a bit also.

Anyway, I have to test for a few days now if this setup is really stable and how the RAC looks like. Thx to anybody for helping me here!

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