System debugging

System debugging#

Applies to Linux

2024-10-25

5 min read time

ROCm language and system-level debug, flags, and environment variables#

Kernel options to avoid: the Ethernet port getting renamed every time you change graphics cards, net.ifnames=0 biosdevname=0

ROCr error code#

  • 2 Invalid Dimension

  • 4 Invalid Group Memory

  • 8 Invalid (or Null) Code

  • 32 Invalid Format

  • 64 Group is too large

  • 128 Out of VGPRs

  • 0x80000000 Debug Options

Command to dump firmware version and get Linux kernel version#

sudo cat /sys/kernel/debug/dri/1/amdgpu_firmware_info

uname -a

Debug flags#

Debug messages when developing/debugging base ROCm driver. You could enable the printing from libhsakmt.so by setting an environment variable, HSAKMT_DEBUG_LEVEL. Available debug levels are 3-7. The higher level you set, the more messages will print.

  • export HSAKMT_DEBUG_LEVEL=3 : Only pr_err() prints.

  • export HSAKMT_DEBUG_LEVEL=4 : pr_err() and pr_warn() print.

  • export HSAKMT_DEBUG_LEVEL=5 : We currently do not implement “notice”. Setting to 5 is same as setting to 4.

  • export HSAKMT_DEBUG_LEVEL=6 : pr_err(), pr_warn(), and pr_info print.

  • export HSAKMT_DEBUG_LEVEL=7 : Everything including pr_debug prints.

ROCr level environment variables for debug#

HSA_ENABLE_SDMA=0

HSA_ENABLE_INTERRUPT=0

HSA_SVM_GUARD_PAGES=0

HSA_DISABLE_CACHE=1

Turn off page retry on GFX9/Vega devices#

sudo -s

echo 1 > /sys/module/amdkfd/parameters/noretry

HIP environment variables 3.x#

OpenCL debug flags#

AMD_OCL_WAIT_COMMAND=1 (0 = OFF, 1 = On)

PCIe-debug#

For information on how to debug and profile HIP applications, see hip:how-to/debugging

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