<html> <head> <style></style></head> <body class='hmmessage'><div dir='ltr'>Hi, I am using kernel 3.12.6-gentoo, Mesa 10.0.1 and once every two calls to clBuildProgram, the GPU goes to reset after 10 seconds. This also happens on Debian unstable with Mesa 9.2. First hello_world works, the next one hangs, third works, and so on. Despite this hang on this particular OpenCL call, every thing is just fine. I tried to comment out DMA flushing code in r600/r600_hw_context.c, but this issue does not look the one that what was discovered on R600 HW. After the hang, opencl_examples/hello_world returns the correct value (when the machine does not hang completely which happens sometimes). Same behaviour for get-global-id test program. Here is my config & logs: lscpi: 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cayman PRO [Radeon HD 6950] dmesg: [ 826.250105] radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec [ 826.250110] radeon 0000:01:00.0: GPU lockup (waiting for 0x00000000000037bc last fence id 0x00000000000037ba) [ 826.250118] [drm] Disabling audio 0 support [ 826.257466] radeon 0000:01:00.0: Saved 111 dwords of commands on ring 0. [ 826.257496] radeon 0000:01:00.0: GPU softreset: 0x00000008 [ 826.257498] radeon 0000:01:00.0: GRBM_STATUS = 0xB0001828 [ 826.257500] radeon 0000:01:00.0: GRBM_STATUS_SE0 = 0x00000003 [ 826.257502] radeon 0000:01:00.0: GRBM_STATUS_SE1 = 0x00000003 [ 826.257504] radeon 0000:01:00.0: SRBM_STATUS = 0x200000C0 [ 826.257526] radeon 0000:01:00.0: SRBM_STATUS2 = 0x00000000 [ 826.257528] radeon 0000:01:00.0: R_008674_CP_STALLED_STAT1 = 0x00000000 [ 826.257529] radeon 0000:01:00.0: R_008678_CP_STALLED_STAT2 = 0x40000000 [ 826.257531] radeon 0000:01:00.0: R_00867C_CP_BUSY_STAT = 0x00010006 [ 826.257533] radeon 0000:01:00.0: R_008680_CP_STAT = 0x80228647 [ 826.257535] radeon 0000:01:00.0: R_00D034_DMA_STATUS_REG = 0x44C83D57 [ 826.257537] radeon 0000:01:00.0: R_00D834_DMA_STATUS_REG = 0x44C83D57 [ 826.257539] radeon 0000:01:00.0: VM_CONTEXT0_PROTECTION_FAULT_ADDR 0x00000000 [ 826.257541] radeon 0000:01:00.0: VM_CONTEXT0_PROTECTION_FAULT_STATUS 0x00000000 [ 826.257542] radeon 0000:01:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000 [ 826.257544] radeon 0000:01:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x00000000 [ 826.264350] radeon 0000:01:00.0: GRBM_SOFT_RESET=0x00004001 [ 826.264403] radeon 0000:01:00.0: SRBM_SOFT_RESET=0x00000100 [ 826.265558] radeon 0000:01:00.0: GRBM_STATUS = 0x00001828 [ 826.265560] radeon 0000:01:00.0: GRBM_STATUS_SE0 = 0x00000003 [ 826.265561] radeon 0000:01:00.0: GRBM_STATUS_SE1 = 0x00000003 [ 826.265563] radeon 0000:01:00.0: SRBM_STATUS = 0x200000C0 [ 826.265585] radeon 0000:01:00.0: SRBM_STATUS2 = 0x00000000 [ 826.265587] radeon 0000:01:00.0: R_008674_CP_STALLED_STAT1 = 0x00000000 [ 826.265589] radeon 0000:01:00.0: R_008678_CP_STALLED_STAT2 = 0x00000000 [ 826.265590] radeon 0000:01:00.0: R_00867C_CP_BUSY_STAT = 0x00000000 [ 826.265592] radeon 0000:01:00.0: R_008680_CP_STAT = 0x00000000 [ 826.265594] radeon 0000:01:00.0: R_00D034_DMA_STATUS_REG = 0x44C83D57 [ 826.265596] radeon 0000:01:00.0: R_00D834_DMA_STATUS_REG = 0x44C83D57 [ 826.265623] radeon 0000:01:00.0: GPU reset succeeded, trying to resume [ 826.283559] [drm] PCIE gen 2 link speeds already enabled [ 826.285981] [drm] PCIE GART of 1024M enabled (table at 0x0000000000273000). [ 826.286049] radeon 0000:01:00.0: WB enabled [ 826.286051] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000080000c00 and cpu addr 0xffff8800cbaa3c00 ...... On hello_world.c program hangs every two calls at line: error = clBuildProgram(program, 1, /* Number of devices */ &device_id, NULL, /* options */ NULL, /* callback function when compile is complete */ NULL); /* user data for callback */ Thanks for your help, Regards </div></body> </html>