1 Reply Latest reply on May 11, 2015 4:18 AM by dipak

    hd 7970 6gb mem aloc


      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 ?