I have a machine at home that has an AMD APU and also another spare video card i had installed I was hoping to run work units on the 4 CPU cores plus both GPU if thats possible ...


But i can never get the drivers working, here is as much info as I can dig up on the system, hope it helps ..
General Info

OS Info
cat /etc/redhat-release
CentOS release 6.7 (Final)

Current Graphics Driver Package info
rpm -qa | grep fg
fglrx-x11-drv-15.7-1.el6.elrepo.x86_64
kmod-fglrx-15.7-1.el6.elrepo.x86_64



13-Oct-2015 04:28:28 [---] Exit requested by user
13-Oct-2015 04:36:14 [---] cc_config.xml not found - using defaults
13-Oct-2015 04:36:14 [---] Starting BOINC client version 7.2.33 for x86_64-pc-linux-gnu
13-Oct-2015 04:36:14 [---] log flags: file_xfer, sched_ops, task
13-Oct-2015 04:36:14 [---] Libraries: libcurl/7.19.7 NSS/3.19.1 Basic ECC zlib/1.2.3 libidn/1.18 libssh2/1.4.2
13-Oct-2015 04:36:14 [---] Data directory: /var/lib/boinc
13-Oct-2015 04:36:14 [---] OpenCL CPU: AMD A10-7800 Radeon R7, 12 Compute Cores 4C+8G (OpenCL driver vendor: Advanced Micro Devices, Inc., driver version 1800.5 (sse2,avx,fma4), device version OpenCL 1.2 AMD-APP (1800.5))
13-Oct-2015 04:36:14 [---] No usable GPUs found
13-Oct-2015 04:36:14 [---] Host name: server.home.lan
13-Oct-2015 04:36:14 [---] Processor: 4 AuthenticAMD AMD A10-7800 Radeon R7, 12 Compute Cores 4C+8G [Family 21 Model 48 Stepping 1]
13-Oct-2015 04:36:14 [---] Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb cpb xsaveopt npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold fsgsbase bmi1
13-Oct-2015 04:36:14 [---] OS: Linux: 2.6.32-573.7.1.el6.x86_64
13-Oct-2015 04:36:14 [---] Memory: 7.63 GB physical, 7.91 GB virtual
13-Oct-2015 04:36:14 [---] Disk: 9.72 GB total, 8.02 GB free
13-Oct-2015 04:36:14 [---] Local time is UTC +11 hours
13-Oct-2015 04:36:14 [---] Config: GUI RPCs allowed from:
13-Oct-2015 04:36:14 [---] 192.168.x.x
13-Oct-2015 04:36:14 [---] A new version of BOINC is available. (7.2.42) <a href=http://boinc.berkeley.edu/download.php>Download</a>
13-Oct-2015 04:36:14 [SETI@home] URL http://setiathome.berkeley.edu/; Computer ID 7290632; resource share 300
13-Oct-2015 04:36:14 [SETI@home] General prefs: from SETI@home (last modified 01-Aug-2011 18:14:27)
13-Oct-2015 04:36:14 [SETI@home] Computer location: home
13-Oct-2015 04:36:14 [SETI@home] General prefs: no separate prefs for home; using your defaults
13-Oct-2015 04:36:14 [---] Preferences:
13-Oct-2015 04:36:14 [---] max memory usage when active: 3906.57MB
13-Oct-2015 04:36:14 [---] max memory usage when idle: 7031.83MB
13-Oct-2015 04:36:14 [---] max disk usage: 4.86GB
13-Oct-2015 04:36:14 [---] don't use GPU while active
13-Oct-2015 04:36:14 [---] suspend work if non-BOINC CPU load exceeds 30%
13-Oct-2015 04:36:14 [---] (to change preferences, visit a project web site or select Preferences in the Manager)
13-Oct-2015 04:36:14 [---] Not using a proxy
13-Oct-2015 04:36:15 Initialization completed

dave0 hi

I'm not great at RHL more Debian but the key line at the moment is

13-Oct-2015 04:36:14 [---] No usable GPUs found

You don't say specifically what GPU(s) are installed, not all GPUs are capable.

From your drivers I'm guessing it is AMD, so
lspci | grep AMD

and / or
aticonfig --lsa

should show what hardware might be working.

When you say can never get the drivers to work, do you mean "for GPU crunching" or they don't work at all?

Lastly there are some sticky threads in this forum which should help, in particular with OpenCL libraries needed.

Good luck

13-Oct-2015 04:36:14 [---] Host name: server.home.lan

Do you have X running?