Posts by magic

1) Message boards : News : Admin Updates Discussion (Message 77099)
Posted 17 days ago by magic_sam
Post:

Hello all,

Looks like "Max # of simultaneous MilkyWay@home tasks" actually means "Total number of tasks, running and cached"...

I set my preferences to:

Max # of simultaneous Milkyway@home tasks 7
Max # of threads for each Milkyway@home task 4

In order to have 28 cores dedicated to Milkyway@home.

I sometimes get the same results as Sutaru Tsureku, i.e: "This computer has reached a limit on tasks in progress".

BOINC (v.8.0.1) is not caching any work for Milkyway@home, even though it should:

Store at least 0.2 days of work
Store up to an additional 0.3 days of work

What am I doing wrong ?

Cheers, Sam

2) Questions and Answers : Unix/Linux : RX6600/Ubuntu 22.10 > Error creating command queue (-6): CL_OUT_OF_HOST_MEMORY (Message 75075)
Posted 21 Feb 2023 by magic_sam
Post:

Hi,

Please have a look at this other thread:

https://milkyway.cs.rpi.edu/milkyway/forum_thread.php?id=4885&postid=75074#75074

Looks like we are several participants with a similar issue.

Cheers, Samuel

3) Questions and Answers : Unix/Linux : CL_OUT_OF_HOST_MEMORY with AMD RX 6600 XT on Xubuntu 20.04 (Message 75074)
Posted 21 Feb 2023 by magic_sam
Post:

Dear all,

I believe I ran into a similar issue with an AMD Radeon RX 7900 XTX:

<core_client_version>7.20.5</core_client_version>
<![CDATA[
<message>
process exited with code 250 (0xfa, -6)</message>
<stderr_txt>
<search_application> milkyway_separation 1.46 Linux x86_64 double OpenCL </search_application>
Reading preferences ended prematurely
BOINC GPU type suggests using OpenCL vendor 'Advanced Micro Devices, Inc.'
Setting process priority to 0 (13): Permission denied
Error loading Lua script 'astronomy_parameters.txt': [string "number_parameters: 4..."]:1: '<name>' expected near '4' 
Switching to Parameter File 'astronomy_parameters.txt'
<number_WUs> 5 </number_WUs>
<number_params_per_WU> 20 </number_params_per_WU>
Using AVX path
Found 1 platform
Platform 0 information:
  Name:       AMD Accelerated Parallel Processing
  Version:    OpenCL 2.1 AMD-APP (3513.0)
  Vendor:     Advanced Micro Devices, Inc.
  Extensions: cl_khr_icd cl_amd_event_callback 
  Profile:    FULL_PROFILE
Using device 0 on platform 0
Found 2 CL devices
Device 'gfx1100' (Advanced Micro Devices, Inc.:0x1002) (CL_DEVICE_TYPE_GPU)
Board: Radeon RX 7900 XTX
Driver version:      3513.0 (HSA1.1,LC)
Version:             OpenCL 2.0 
Compute capability:  0.0
Max compute units:   48
Clock frequency:     3220 Mhz
Global mem size:     25753026560
Local mem size:      65536
Max const buf size:  21890072576
Double extension:    cl_khr_fp64
Error creating command queue (-6): CL_OUT_OF_HOST_MEMORY
Error getting device and context (-6): CL_OUT_OF_HOST_MEMORY
Failed to calculate likelihood
Using AVX path
Found 1 platform
Platform 0 information:
  Name:       AMD Accelerated Parallel Processing
  Version:    OpenCL 2.1 AMD-APP (3513.0)
  Vendor:     Advanced Micro Devices, Inc.
  Extensions: cl_khr_icd cl_amd_event_callback 
  Profile:    FULL_PROFILE
Using device 0 on platform 0
Found 2 CL devices
Device 'gfx1100' (Advanced Micro Devices, Inc.:0x1002) (CL_DEVICE_TYPE_GPU)
Board: Radeon RX 7900 XTX
Driver version:      3513.0 (HSA1.1,LC)
Version:             OpenCL 2.0 
Compute capability:  0.0
Max compute units:   48
Clock frequency:     3220 Mhz
Global mem size:     25753026560
Local mem size:      65536
Max const buf size:  21890072576
Double extension:    cl_khr_fp64
Error creating command queue (-6): CL_OUT_OF_HOST_MEMORY
Error getting device and context (-6): CL_OUT_OF_HOST_MEMORY
Failed to calculate likelihood
Using AVX path
Found 1 platform
Platform 0 information:
  Name:       AMD Accelerated Parallel Processing
  Version:    OpenCL 2.1 AMD-APP (3513.0)
  Vendor:     Advanced Micro Devices, Inc.
  Extensions: cl_khr_icd cl_amd_event_callback 
  Profile:    FULL_PROFILE
Using device 0 on platform 0
Found 2 CL devices
Device 'gfx1100' (Advanced Micro Devices, Inc.:0x1002) (CL_DEVICE_TYPE_GPU)
Board: Radeon RX 7900 XTX
Driver version:      3513.0 (HSA1.1,LC)
Version:             OpenCL 2.0 
Compute capability:  0.0
Max compute units:   48
Clock frequency:     3220 Mhz
Global mem size:     25753026560
Local mem size:      65536
Max const buf size:  21890072576
Double extension:    cl_khr_fp64
Error creating command queue (-6): CL_OUT_OF_HOST_MEMORY
Error getting device and context (-6): CL_OUT_OF_HOST_MEMORY
Failed to calculate likelihood
Using AVX path
Found 1 platform
Platform 0 information:
  Name:       AMD Accelerated Parallel Processing
  Version:    OpenCL 2.1 AMD-APP (3513.0)
  Vendor:     Advanced Micro Devices, Inc.
  Extensions: cl_khr_icd cl_amd_event_callback 
  Profile:    FULL_PROFILE
Using device 0 on platform 0
Found 2 CL devices
Device 'gfx1100' (Advanced Micro Devices, Inc.:0x1002) (CL_DEVICE_TYPE_GPU)
Board: Radeon RX 7900 XTX
Driver version:      3513.0 (HSA1.1,LC)
Version:             OpenCL 2.0 
Compute capability:  0.0
Max compute units:   48
Clock frequency:     3220 Mhz
Global mem size:     25753026560
Local mem size:      65536
Max const buf size:  21890072576
Double extension:    cl_khr_fp64
Error creating command queue (-6): CL_OUT_OF_HOST_MEMORY
Error getting device and context (-6): CL_OUT_OF_HOST_MEMORY
Failed to calculate likelihood
Using AVX path
Found 1 platform
Platform 0 information:
  Name:       AMD Accelerated Parallel Processing
  Version:    OpenCL 2.1 AMD-APP (3513.0)
  Vendor:     Advanced Micro Devices, Inc.
  Extensions: cl_khr_icd cl_amd_event_callback 
  Profile:    FULL_PROFILE
Using device 0 on platform 0
Found 2 CL devices
Device 'gfx1100' (Advanced Micro Devices, Inc.:0x1002) (CL_DEVICE_TYPE_GPU)
Board: Radeon RX 7900 XTX
Driver version:      3513.0 (HSA1.1,LC)
Version:             OpenCL 2.0 
Compute capability:  0.0
Max compute units:   48
Clock frequency:     3220 Mhz
Global mem size:     25753026560
Local mem size:      65536
Max const buf size:  21890072576
Double extension:    cl_khr_fp64
Error creating command queue (-6): CL_OUT_OF_HOST_MEMORY
Error getting device and context (-6): CL_OUT_OF_HOST_MEMORY
Failed to calculate likelihood
18:10:55 (9902): called boinc_finish(-6)

</stderr_txt>
]]>

BOINC is version 7.20.5 installed on Ubuntu 22.04, with latest ROCm drivers:

https://docs.amd.com/bundle/ROCm-Installation-Guide-v5.4.3/page/How_to_Install_ROCm.html

As reported by others, Einstein@Home GPU tasks work fine.

Best regards,

Samuel

Posts by magic_sam