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hd 7970 6gb mem aloc

Question asked by p4radox on May 9, 2015
Latest reply on May 11, 2015 by dipak

Recently bough an hd 7970 6gb vapour-x but encountered an issue ;/ using app sdk 2.9 and 13.12 drivers the max alloc memory is 1766 mb even after GPU_MAX_HEAP_SIZE=100  GPU_MAX_ALLOC_SIZE=100 GPU_MAX_ALLOC_PERCENT=100 GPU_FORCE_64BIT_PTR=1 . Clinfo;

 

 

Number of platforms:                             1

  Platform Profile:                              FULL_PROFILE

  Platform Version:                              OpenCL 1.2 AMD-APP (1348.5)

  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:                               2

  Device Type:                                   CL_DEVICE_TYPE_GPU

  Device ID:                                     4098

  Board name:                                    AMD Radeon HD 7900 Series

  Device Topology:                               PCI[ B#1, D#0, F#0 ]

  Max compute units:                             32

  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:                   4

  Preferred vector width short:                  2

  Preferred vector width int:                    1

  Preferred vector width long:                   1

  Preferred vector width float:                  1

  Preferred vector width double:                 1

  Native vector width char:                      4

  Native vector width short:                     2

  Native vector width int:                       1

  Native vector width long:                      1

  Native vector width float:                     1

  Native vector width double:                    1

  Max clock frequency:                           1100Mhz

  Address bits:                                  64

  Max memory allocation:                         1851785216

  Image support:                                 Yes

  Max number of images read arguments:           128

  Max number of images write arguments:          8

  Max image 2D width:                            16384

  Max image 2D height:                           16384

  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:                                    Read/Write

  Cache line size:                               64

  Cache size:                                    16384

  Global memory size:                            6323961856

  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:                                   0xb75a2fa0

  Name:                                          Tahiti

  Vendor:                                        Advanced Micro Devices, Inc.

  Device OpenCL C version:                       OpenCL C 1.2

  Driver version:                                1348.5 (VM)

  Profile:                                       FULL_PROFILE

  Version:                                       OpenCL 1.2 AMD-APP (1348.5)

Any idea if this is fixed in next revisions of the drivers and the app sdk or if not how could i potentially fix it ?

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