[OpenCL] app v1.20/v1.21 feedback thread

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Oliver Behnke
Oliver Behnke
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2 Feb 2012 13:17:20 UTC
Topic 84820
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    Hi,

    We just released v1.20 which should fix an important bug which prevented proper validation, in particular on AMD 4xxx GPUs. Let's try and collect your feedback to this specific app version (and this one only) in this thread.

    FYI, please use the latest Catalyst driver (>=12.1) and BOINC client (>=7.0.12).

    Thanks,
    Oliver

    TRuEQ & TuVaLu
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    [OpenCL] app v1.20/v1.21 feedback thread

    2 Feb 2012 13:35:06 UTC
    Message 79010
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      Hi, I have some tasks that all gave errors.

      http://albertathome.org/host/1353/tasks&offset=0&show_names=0&state=5&appid=

      I run on an ATI 4850 with 512MB RAM and Catalyst 11.12
      BM 7.0.12

      Oliver Behnke
      Oliver Behnke
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      RE: I run on an ATI 4850

      2 Feb 2012 13:41:25 UTC
      Message 79011 in response to message 79010
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        Quote:

        I run on an ATI 4850 with 512MB RAM and Catalyst 11.12

        As discussed earlier, we (still) need ~490 MB free GPU memory. This doesn't seem to be the case here. We'd be able to reduce that by 120 MB but that would mean to exclude all OpenCL 1.0 GPUs, including your 4xxx series card.

        FYI, we think about doing this anyway since the OpenCL 1.0 devices don't offer a significant performance gain over the CPU version so it seems worthwhile dropping their support in favor of more relaxed memory requirements.

        Cheers,
        Oliver

        TRuEQ & TuVaLu
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        RE: RE: I run on an ATI

        2 Feb 2012 13:53:57 UTC
        Message 79012 in response to message 79011
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          Quote:
          Quote:

          I run on an ATI 4850 with 512MB RAM and Catalyst 11.12

          As discussed earlier, we (still) need ~490 MB free GPU memory. This does't seem to be the case here. We'd be able to reduce that by 120 MB but that would mean to exclude all OpenCL 1.0 GPUs, including your 4xxx series card.

          FYI, we think about doing this anyway since the OpenCL 1.0 devices don't offer a significant performance gain over the CPU version so it seems worthwhile dropping their support in favor of more relaxed memory requirements.

          Cheers,
          Oliver

          Well, if the mem need was 450Mb you would have a few more 4xxx cards....
          I think that my card has about 480Mb free so if the demand is 470MB one could run the app on 48xx cards.

          Oliver Behnke
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          As I said, we can reduce it

          2 Feb 2012 14:09:56 UTC
          Message 79013 in response to message 79012
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            As I said, we can reduce it but only by dropping OpenCL 1.0 (i.e. AMD 4xxx) support.

            Oliver

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            RE: As I said, we can

            2 Feb 2012 14:19:28 UTC
            Message 79014 in response to message 79013
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              Quote:

              As I said, we can reduce it but only by dropping OpenCL 1.0 (i.e. AMD 4xxx) support.

              Oliver

              Ok

              oz
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              Have tried several Catalyst

              2 Feb 2012 17:10:37 UTC
              Message 79015
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                Have tried several Catalyst driver/AMD-APP-SDK/Boinc combinations.
                OS = Ubuntu/oneiric, 2 x AMD 5770 (Juniper) Cards

                ATI GPU 0: ATI Radeon HD 5700 series (Juniper) (CAL version 1.4.1664, 1024MB, 817MB available, 2720 GFLOPS peak)
ATI GPU 1: ATI Radeon HD 5700 series (Juniper) (CAL version 1.4.1664, 1024MB, 983MB available, 2720 GFLOPS peak)
02-Feb-2012 16:45:01 [---] OpenCL: ATI GPU 0: Juniper (driver version CAL 1.4.1664, device version OpenCL 1.1 AMD-APP (851.4), 512MB, 817MB available)
02-Feb-2012 16:45:01 [---] OpenCL: ATI GPU 1: Juniper (driver version CAL 1.4.1664, device version OpenCL 1.1 AMD-APP (851.4), 512MB, 983MB available)

                Last combination is Catalyst 12.1, AMD-APP-SDK-v2.6, (without OpenCL v1.2 support) boinc 7.0.12. Results are like=>

                http://albertathome.org/task/114016

                clinfo reports:clinfo

                Number of platforms:                             1
  Platform Profile:                              FULL_PROFILE
  Platform Version:                              OpenCL 1.1 AMD-APP (851.4)
  Platform Name:                                 AMD Accelerated Parallel Processing
  Platform Vendor:                               Advanced Micro Devices, Inc.
  Platform Extensions:                           cl_khr_icd cl_amd_event_callback cl_amd_offline_devices
                


                  Platform Name:                                 AMD Accelerated Parallel Processing
                
Number of devices:                               3
                
  Device Type:                                   CL_DEVICE_TYPE_GPU
                
  Device ID:                                     4098
                
  Board name:                                    ATI Radeon HD 5700 Series
                
  Device Topology:                               PCI[ B#2, D#0, F#0 ]
                
  Max compute units:                             10
                
  Max work items dimensions:                     3
                
    Max work items[0]:                           256
                
    Max work items[1]:                           256
                
    Max work items[2]:                           256
                
  Max work group size:                           256
                
  Preferred vector width char:                   16
                
  Preferred vector width short:                  8
                
  Preferred vector width int:                    4
                
  Preferred vector width long:                   2
                
  Preferred vector width float:                  4
                
  Preferred vector width double:                 0
                
  Native vector width char:                      16
                
  Native vector width short:                     8
                
  Native vector width int:                       4
                
  Native vector width long:                      2
                
  Native vector width float:                     4
                
  Native vector width double:                    0
                
  Max clock frequency:                           0Mhz
                
  Address bits:                                  32
                
  Max memory allocation:                         134217728
                
  Image support:                                 Yes
                
  Max number of images read arguments:           128
                
  Max number of images write arguments:          8
                
  Max image 2D width:                            8192
                
  Max image 2D height:                           8192
                
  Max image 3D width:                            2048
                
  Max image 3D height:                           2048
                
  Max image 3D depth:                            2048
                
  Max samplers within kernel:                    16
                
  Max size of kernel argument:                   1024
                
  Alignment (bits) of base address:              2048
                
  Minimum alignment (bytes) for any datatype:    128
                
  Single precision floating point capability
                
    Denorms:                                     No
                
    Quiet NaNs:                                  Yes
                
    Round to nearest even:                       Yes
                
    Round to zero:                               Yes
                
    Round to +ve and infinity:                   Yes
                
    IEEE754-2008 fused multiply-add:             Yes
                
  Cache type:                                    None
                
  Cache line size:                               0
                
  Cache size:                                    0
                
  Global memory size:                            536870912
                
  Constant buffer size:                          65536
                
  Max number of constant args:                   8
                
  Local memory type:                             Scratchpad
                
  Local memory size:                             32768
                
  Kernel Preferred work group size multiple:     64
                
  Error correction support:                      0
                
  Unified memory for Host and Device:            0
                
  Profiling timer resolution:                    1
                
  Device endianess:                              Little
                
  Available:                                     Yes
                
  Compiler available:                            Yes
                
  Execution capabilities:                                
                
    Execute OpenCL kernels:                      Yes
                
    Execute native function:                     No
                
  Queue properties:                              
                
    Out-of-Order:                                No
                
    Profiling :                                  Yes
                
  Platform ID:                                   0x7fedcd03c100
                
  Name:                                          Juniper
                
  Vendor:                                        Advanced Micro Devices, Inc.
                
  Device OpenCL C version:                       OpenCL C 1.1 
                
  Driver version:                                CAL 1.4.1664
                
  Profile:                                       FULL_PROFILE
                
  Version:                                       OpenCL 1.1 AMD-APP (851.4)
                
  Extensions:                                    cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_gl_sharing cl_ext_atomic_counters_32 cl_amd_device_attribute_query cl_amd_vec3 cl_amd_printf cl_amd_media_ops cl_amd_popcnt

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                Great, initial estimated time

                2 Feb 2012 21:10:41 UTC
                Message 79016
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                  Great, initial estimated time to completion, 286 hours. No wonder it went into HP. But that DCF of 11 is way out of whack.
                  i3-530, Win 7 - 64bit, 8GB RAM, ATI HD6850 2GB, Catalysts 11.12, BOINC 7.0.12

                  Oliver Behnke
                  Oliver Behnke
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                  RE: Last combination is

                  3 Feb 2012 8:39:40 UTC
                  Message 79017 in response to message 79015
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                    Quote:

                    Last combination is Catalyst 12.1, AMD-APP-SDK-v2.6, (without OpenCL v1.2 support) boinc 7.0.12. Results are like=>

                    http://albertathome.org/task/114016

                    clinfo reports:clinfo

                      Global memory size:                            536870912

                    Your card has 512 MB video memory. That's right on the edge of what our app requires (see above). In your case it's not sufficient - error 5 means "out of resources" (memory).

                    Sorry. You would be one who would benefit if we drop OpenCL 1.0 support in favor of lower memory requirements...

                    Cheers,
                    Oliver

                    PS: BOINC's memory information still seems to be off. I'll forward this...

                    Oliver Behnke
                    Oliver Behnke
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                    RE: Great, initial

                    3 Feb 2012 8:45:28 UTC
                    Message 79018 in response to message 79016
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                      Quote:
                      Great, initial estimated time to completion, 286 hours. No wonder it went into HP. But that DCF of 11 is way out of whack.
                      i3-530, Win 7 - 64bit, 8GB RAM, ATI HD6850 2GB, Catalysts 11.12, BOINC 7.0.12

                      I'll forward this to Bernd.

                      Thanks,
                      Oliver

                      oz
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                      Oops you're right, video

                      3 Feb 2012 9:27:40 UTC
                      Message 79019
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                        Oops you're right, video memory is reported as 1024MB for both cards. With 817MB, 983MB available, but global memory for OpenCL is reported from AMD-APP-SDK as 512MB , but (strange) boinc says 817MB, 983MB available). Is there a tweak in OpenCL configuration? amdccle (Catalyst Control Center) says 1024MB Video Memory for both cards. Hmm...?

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