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Old 2019-10-26, 06:08   #78
ixfd64
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I did some more testing and was able to get mfakto to detect the integrated GPU on a Windows 10 laptop using the -d 11 option, but the program hangs on the first self-test.

Just curious, what drivers do you use?
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Old 2019-10-26, 12:09   #79
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Quote:
Originally Posted by ixfd64 View Post
Just curious, what drivers do you use?
On the i7-7500U,
GPU-Z Graphics Card tab gives driver version as 22.20.16.4836/Win10 64
Provider Intel Corporation
Driver date Oct 17 2017
Digital Signature WHQL

Advanced tab says Platform Version OpenCL 2.1

It's only about 18-20GHD/day. Tuning a discrete gpu can gain more than that.
And it's only suitable for TF, not primality testing.
On the i7-7500U, it makes the console very unresponsive when running.
It also costs about half of prime95 throughput. So I don't often run it on the i7-7500U.

Oddly, the i7-8750H has no responsiveness issue though. So I run that UHD630 routinely.

Last fiddled with by kriesel on 2019-10-26 at 12:11
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Old 2019-10-29, 23:51   #80
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Good news and bad news. I was able to get mfakto to run on the integrated GPU on two Windows 10 laptops after updating the Intel drivers. I'm guessing this is due to the new compute runtime for OpenCL released last year: https://mathema.tician.de/the-state-...puting-in-2018

However, mfakto still fails to run on the integrated GPU on my R7 M460 laptop. I've been told this is due to the AMD Radeon driver disabling OpenCL support on Intel integrated graphics. I manually upgraded the Intel drivers, but this must have broken something because both mfakto and clinfo can no longer detect the integrated GPU. Disabling the AMD GPU does not resolve the issue, and neither does this solution: https://geeks3d.com/20181220/how-to-...r-is-installed

I've also had no luck getting the self-tests to pass on macOS.

Last fiddled with by ixfd64 on 2019-11-04 at 21:01
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Old 2019-11-04, 21:01   #81
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I updated my Radeon drivers to the latest version, and now mfakto runs on the integrated GPU in my R7 M460 laptop. However, the -d c option no longer works. It seems like the OpenCL driver disables access to the CPU if it detects the integrated GPU.

Last fiddled with by ixfd64 on 2019-11-04 at 21:02
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Old 2019-11-05, 00:10   #82
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Quote:
Originally Posted by ixfd64 View Post
I updated my Radeon drivers to the latest version, and now mfakto runs on the integrated GPU in my R7 M460 laptop. However, the -d c option no longer works. It seems like the OpenCL driver disables access to the CPU if it detects the integrated GPU.
TF on a cpu is a waste of capability anyway. Consider it a safety feature. P-1 or primality on cpus are more productive usage.
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Old 2020-11-18, 01:51   #83
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I will soon have this chip in a Windows laptop. Would anyone be interested in benchmarks from the Iris Xe integrated Intel gpus?

Which GPU programs are easy to setup and use on iGPUs in Windows? Upon reading the last few pages of this thread, it appears mfacto is the first thing to try.

Last fiddled with by masser on 2020-11-18 at 01:57
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Old 2020-11-18, 09:47   #84
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Xe benchmarks would be very interesting as an indicator of intel's potential. From what we know mfakto could be quite good and gpuowl may be terrible if the lack of DP is true: https://mersenneforum.org/showpost.p...postcount=2535


Power draw under load would be a bonus if you can measure it.
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Old 2020-11-18, 10:33   #85
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Quote:
Originally Posted by masser View Post
Would anyone be interested in benchmarks from the Iris Xe integrated Intel gpus?Which GPU programs are easy to setup and use on iGPUs in Windows?
Yes please give me gpuowl PRP software timings (iteration times in µs/it) for the first 200000 iterations for your IGP.
I am currently creating a currenttimming list in (.ods) format, which better reflects the performance for gppuowl than mersenne.ca which is better suited for CudaLucas. You can use Linux or Windows-version, the values ​​should only differ by a few percent. The Linux version is around 5% faster. The windows version works without any further installation effort.

gpuowl -iters 200000 -prp 77936867

Fastest Windows Version (with Proofs)
https://mersenneforum.org/showpost.p...94&postcount=8

Linux binary version Unbuntu 18.04
https://mersenneforum.org/showpost.p...1&postcount=40

Downloadlink for .ods sheet (with no macros)
https://drive.google.com/file/d/1Tim...l57X_RWO0/view

Example of benchmark
https://mersenneforum.org/showpost.p...postcount=2602

Last fiddled with by moebius on 2020-11-18 at 10:35
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Old 2020-11-18, 13:20   #86
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Quote:
Originally Posted by M344587487 View Post
gpuowl may be terrible if the lack of DP is true
It shouldn't be that bad with 0.422 TFLOPs FP64.
https://www.techpowerup.com/gpu-specs/iris-xe-graphics-g7-96eu.c3677
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Old 2020-11-18, 13:27   #87
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Quote:
Originally Posted by moebius View Post
It shouldn't be that bad with 0.422 TFLOPs FP64.
https://www.techpowerup.com/gpu-specs/iris-xe-graphics-g7-96eu.c3677
I was going by this, which suggests that there are no FP64 units and that FP64 computation relies on emulation with smaller units: https://www.sisoftware.co.uk/tag/1165g7/


A benchmark will clear it up.
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Old 2020-11-21, 01:11   #88
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Quote:
Originally Posted by masser View Post
I will soon have this chip in a Windows laptop. Would anyone be interested in benchmarks from the Iris Xe integrated Intel gpus?

Which GPU programs are easy to setup and use on iGPUs in Windows? Upon reading the last few pages of this thread, it appears mfacto is the first thing to try.
I have the latest mfakto executable on the laptop, but the self-tests are failing 14 out of 30, of the short test set. Any ideas what I should try?
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