Hi all,
I just installed the latest AMD Catalyst drivers on my system containing an AMD A10-7850K APU running Ubuntu 140.04.2 LTS. The drivers installed fine and I can run OpenCL applications. The dmesg output shows a weird error however:
[ 13.791220] <6>[fglrx] Maximum main memory to use for locked dma buffers: 5650 MBytes.
[ 13.791269] <6>[fglrx] vendor: 1002 device: 130f revision: 0 count: 1
[ 13.791625] <6>[fglrx] IOMMU is enabled, CrossFire are not supported on this platform
[ 13.791626] <6>[fglrx] Disable IOMMU in BIOS options or kernel boot parameters to support CF
[ 13.791695] <6>[fglrx] ioport: bar 4, base 0xf000, size: 0x100
[ 13.792169] <6>[fglrx] Kernel PAT support is enabled
[ 13.792188] <6>[fglrx] module loaded - fglrx 15.10.4 [Apr 14 2015] with 1 minors
...
[ 152.600789] fglrx_pci 0000:00:01.0: irq 94 for MSI/MSI-X
[ 152.601775] <6>[fglrx] Firegl kernel thread PID: 1319
[ 152.601937] <6>[fglrx] Firegl kernel thread PID: 1320
[ 152.602020] <6>[fglrx] Firegl kernel thread PID: 1321
[ 152.602112] <6>[fglrx] IRQ 94 Enabled
[ 152.609923] <6>[fglrx] fglrx enable the IOMMUv2 support.
[ 152.609932] <6>[fglrx] Reserved FB block: Shared offset:0, size:1000000
[ 152.609933] <6>[fglrx] Reserved FB block: Unshared offset:f9b4000, size:4000
[ 152.609934] <6>[fglrx] Reserved FB block: Unshared offset:f9b8000, size:548000
[ 152.609936] <6>[fglrx] Reserved FB block: Unshared offset:ff00000, size:100000
[ 152.609937] <6>[fglrx] Reserved FB block: Unshared offset:7ffd7000, size:29000
[ 153.528893] <3>[fglrx:firegl_lock_device] *ERROR* trying to lock without a valid SAREA setup!
I don't know if that error should be troublesome or not, but I can still run OpenCL code on both the CPU & GPU portions of the APU. So far so good...
When I try and run CodeXL, it just hangs...so, I tried to use the standalone profiler on my application (I'm running NPB benchmarks):
$: sudo /opt/AMD/CodeXL_1.7-7300/x86_64/sprofile -p ./ep.A.x ../EP
[sudo] password for rlyerly
NAS Parallel Benchmarks (NPB3.3-OCL) - EP Benchmark
Number of random numbers generated: 536870912
AMD CodeXL GPU Profiler V3.1.7300 is Enabled
Failed to generate profile result /home/rlyerly/Session1.csv.
The dmesg output shows this:
[ 2500.315753] traps: ep.A.x[1551] general protection ip:7f9ddb75b536 sp:7fff8d4fd450 error:0 in libc-2.19.so[7f9ddb6d8000+1bb000]
[ 2500.439470] <3>[fglrx:firegl_lock_device] *ERROR* trying to lock without a valid SAREA setup!
What is going on? Segfaulting in libc sounds pretty bad, and I don't know what I can do...is there an older version of CodeXL I can download?
