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Altera_Forum
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7 years ago

OpenCL HostApp fails with acl_bind_buffer_to_device: Assertion `mem' failed

Hey,

first some infos about the environment:

Board: Nallatech 510T (2x Arria 10)

Ubuntu 16.04.

Quartus 17.1.0

Flashing the .aocx and compiling of the HostApp was successfull.

Now when i start the HostApp, the device was found and the HostApp tried to start.

But then the following error is shown: 

acl_mem.c:398: acl_bind_buffer_to_device: Assertion `mem' failed.

See full result: 

Listing OpenCL devices (OCLMiner).  ℹ  13:00:38|ethminer  Found suitable OpenCL device  with 4294967296  bytes of GPU memory
  ℹ  13:00:38|stratum   Connecting to stratumV2 server eth-eu1.nanopool.org:9999
  ℹ  13:00:38|stratum   Connected!
  ℹ  13:00:38|stratum   Starting farm
 ocl  13:00:38|ocl-0     No work. Pause for 3 s.
 ocl  13:00:38|ocl-1     No work. Pause for 3 s.
  ℹ  13:00:38|stratum   Received new job# 0x7c1a12  seed:# 8308d376eeb469b7ff84bd59c51988d9  target:# 000000006df37f675ef6eadf
  ℹ  13:00:38|stratum   Received new job# 0x7c1a12  seed:# 8308d376eeb469b7ff84bd59c51988d9  target:# 000000006df37f675ef6eadf
 ocl  13:00:41|ocl-0     New work: header# 7c1a1211… target 000000006df37f675ef6eadf5ab9a2072d44268d97df837e6748956e5c6c2116
 ocl  13:00:41|ocl-0     New seed# 8308d376…
 ocl  13:00:41|ocl-1     New work: header# 7c1a1211… target 000000006df37f675ef6eadf5ab9a2072d44268d97df837e6748956e5c6c2116
 ocl  13:00:41|ocl-1     New seed# 8308d376…
 ocl  13:00:43|ocl-0     Platform: Intel(R) FPGA SDK for OpenCL(TM)
 ocl  13:00:43|ocl-1     Platform: Intel(R) FPGA SDK for OpenCL(TM)
 ocl  13:00:43|ocl-0     Device:   p510t_min_ax115 : nalla_pcie (aclnalla_pcie0)    1CU 4096MB  / OpenCL 1.0 Intel(R) FPGA SDK for OpenCL(TM), Version 17.1
 ocl  13:00:43|ocl-0     OpenCL kernel: Custom 'p510t_min_ax115 : nalla_pcie (aclnalla_pcie0).aocx'
 ocl  13:00:43|ocl-1     Device:   p510t_min_ax115 : nalla_pcie (aclnalla_pcie1)    1CU 4096MB  / OpenCL 1.0 Intel(R) FPGA SDK for OpenCL(TM), Version 17.1
 ocl  13:00:43|ocl-1     OpenCL kernel: Custom 'p510t_min_ax115 : nalla_pcie (aclnalla_pcie1).aocx'
  m  13:00:43|ethminer  Speed   0.00Mh/s No-Fee (295s)
            p510t_min_ax115 : nalla_pcie (aclnalla_pcie0)    1CU 4096MB -  0C   0% -   0.00Mh/s 
            p510t_min_ax115 : nalla_pcie (aclnalla_pcie1)    1CU 4096MB -  0C   0% -   0.00Mh/s 
 
 ocl  13:00:43|ocl-1     OpenCL kernel: Custom 'p510t_min_ax115 : nalla_pcie (aclnalla_pcie1).aocx'
 ocl  13:00:43|ocl-1     OpenCL kernel: GROUP_SIZE 128
 ocl  13:00:43|ocl-0     OpenCL kernel: Custom 'p510t_min_ax115 : nalla_pcie (aclnalla_pcie0).aocx'
 ocl  13:00:43|ocl-0     OpenCL kernel: GROUP_SIZE 128
 ocl  13:00:43|ocl-1     OpenCL kernel: DAG_SIZE 21495797
 ocl  13:00:43|ocl-0     OpenCL kernel: DAG_SIZE 21495797
 ocl  13:00:43|ocl-1     OpenCL kernel: LIGHT_SIZE 671743
 ocl  13:00:43|ocl-0     OpenCL kernel: LIGHT_SIZE 671743
 ocl  13:00:43|ocl-1     OpenCL kernel: ACCESSES 64
 ocl  13:00:43|ocl-0     OpenCL kernel: ACCESSES 64
 ocl  13:00:43|ocl-1     OpenCL kernel: MAX_OUTPUTS 1
 ocl  13:00:43|ocl-0     OpenCL kernel: MAX_OUTPUTS 1
 ocl  13:00:43|ocl-1     OpenCL kernel: PLATFORM 0
 ocl  13:00:43|ocl-0     OpenCL kernel: PLATFORM 0
 ocl  13:00:43|ocl-1     OpenCL kernel: COMPUTE 0
 ocl  13:00:43|ocl-0     OpenCL kernel: COMPUTE 0
 ocl  13:00:43|ocl-1     OpenCL kernel: THREADS_PER_HASH 4
 ocl  13:00:43|ocl-0     OpenCL kernel: THREADS_PER_HASH 4
  ✘  13:00:44|ocl-0     Build info: 
  ✘  13:00:44|ocl-1     Build info: 
ethminer: acl_mem.c:398: acl_bind_buffer_to_device: Assertion `mem' failed.

I used the ethminer from https://github.com/maetti79/ethminer

Hope you can help.

If you need more information, just ask.

thank you!

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    7 years ago

    You should probably ask the author of that repository. I would be surprised if that code even works.

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    7 years ago

    We talked to the author already and he sent us a newer version, but with the same issue and nearly the same code.

    We added a debugging and error helpers, but can't get past the initialisation stage. The author does not respond anymore, but he said, he has a working Nallatech 510S with this code. That was the last information we received from him.

    I think the error has something to do with the memory release. The verbose debugging says "double free or corruption (!pref): 0x00000...124c6a0...)". The host has 32GB physical ram and our FPGA has 2 x 8GB Global Ram per FPGA Accelerator (Nallatech 510T with 2x Arria10).

    Maybe it has something to do with host memory. Do you know the error or could you tell us where we should look?

    Thank you!

    PS: hello_world and stuff like that is working without any issue.