Hi,
I don't know if this is the correct forum where ask my question, but since it is cgminer related I start from here
I've got a five 5870 rig I've just set up, it runs xubuntu 11.10 with catalyst 11.8 (the one that installs using xubuntu proprietary drivers applet) and I've installed AMD SDK 2.4.
If I don't use GPU_USE_SYNC_OBJECTS=1 CPU usage goes to 90%, If I use it, on the other hand, cgminer uses from 20 to 35% of CPU and CPU is a sempron 2.8 Ghz
Dud catalyst driver. Use 11.6 or 11.11+ on linux.
Sorry ckolivas,
but there is something else, I've just reinstalled everything using kano recipe, now I have xubuntu 11.04 64bit, catalyst 11.6 and AMD SDK 2.4
fglrxinfo
display: :0.0 screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon HD 5800 Series
OpenGL version string: 4.1.10834 Compatibility Profile Context
display: :0.0 screen: 1
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon HD 5800 Series
OpenGL version string: 4.1.10834 Compatibility Profile Context
display: :0.0 screen: 2
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon HD 5800 Series
OpenGL version string: 4.1.10834 Compatibility Profile Context
display: :0.0 screen: 3
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon HD 5800 Series
OpenGL version string: 4.1.10834 Compatibility Profile Context
display: :0.0 screen: 4
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon HD 5800 Series
OpenGL version string: 4.1.10834 Compatibility Profile Context
cgminer/cgminer -ndevs
[2012-02-26 14:25:56] CL Platform 0 vendor: Advanced Micro Devices, Inc.
[2012-02-26 14:25:56] CL Platform 0 name: AMD Accelerated Parallel Processing
[2012-02-26 14:25:56] CL Platform 0 version: OpenCL 1.1 AMD-APP-SDK-v2.4 (595.10)
[2012-02-26 14:25:56] Platform 0 devices: 5
[2012-02-26 14:25:56] GPU 0 ATI Radeon HD 5800 Series hardware monitoring enabled
[2012-02-26 14:25:56] Setting GPU 0 engine clock to 830
[2012-02-26 14:25:56] Setting GPU 0 memory clock to 160
[2012-02-26 14:25:56] Setting GPU 0 voltage to 1.050
[2012-02-26 14:25:56] GPU 1 ATI Radeon HD 5800 Series hardware monitoring enabled
[2012-02-26 14:25:56] Setting GPU 1 engine clock to 830
[2012-02-26 14:25:56] Setting GPU 1 memory clock to 160
[2012-02-26 14:25:56] Setting GPU 1 voltage to 1.050
[2012-02-26 14:25:56] GPU 2 ATI Radeon HD 5800 Series hardware monitoring enabled
[2012-02-26 14:25:56] Setting GPU 2 engine clock to 830
[2012-02-26 14:25:56] Setting GPU 2 memory clock to 160
[2012-02-26 14:25:56] Setting GPU 2 voltage to 1.050
[2012-02-26 14:25:56] GPU 3 ATI Radeon HD 5800 Series hardware monitoring enabled
[2012-02-26 14:25:56] Setting GPU 3 engine clock to 830
[2012-02-26 14:25:56] Setting GPU 3 memory clock to 160
[2012-02-26 14:25:56] Setting GPU 3 voltage to 1.050
[2012-02-26 14:25:56] GPU 4 ATI Radeon HD 5800 Series hardware monitoring enabled
[2012-02-26 14:25:56] Setting GPU 4 engine clock to 830
[2012-02-26 14:25:56] Setting GPU 4 memory clock to 160
[2012-02-26 14:25:56] Setting GPU 4 voltage to 1.050
[2012-02-26 14:25:56] 5 GPU devices max detected
without GPU_USE_SYNC_OBJECTS=1 either cgminer 2.1.2 or 2.3.1-2 use around 90% of CPU, with sync objects they're around 30-40% with 2.3.1-2 using around 5% more than 2.1.2
cgminer version 2.3.1 - Started: [2012-02-26 14:11:52]
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(5s):1661.5 (avg):1696.8 Mh/s | Q:215 A:188 R:0 HW:0 E:87% U:23.48/m
TQ: 7 ST: 8 SS: 0 DW: 11 NB: 3 LW: 0 GF: 0 RF: 0
Connected to http://pool.abcpool.co:8332 with LP as user spiccioli.m2
Block: 0000065f11c15097cce668b2f037fbe7... Started: [14:16:15]
--------------------------------------------------------------------------------
[P]ool management [G]PU management [S]ettings [D]isplay options [Q]uit
GPU 0: 73.0C 25% | 336.6/346.5Mh/s | A:31 R:0 HW:0 U: 3.87/m I: 5
GPU 1: 73.5C 1270RPM | 331.8/343.1Mh/s | A:34 R:0 HW:0 U: 4.25/m I: 5
GPU 2: 71.5C 2012RPM | 329.9/341.4Mh/s | A:48 R:0 HW:0 U: 5.99/m I: 5
GPU 3: 69.0C 1759RPM | 331.1/339.2Mh/s | A:46 R:0 HW:0 U: 5.74/m I: 5
GPU 4: 75.5C 2214RPM | 327.1/335.2Mh/s | A:30 R:0 HW:0 U: 3.75/m I: 5
--------------------------------------------------------------------------------
and top
top - 14:21:44 up 17 min, 3 users, load average: 0.05, 0.25, 0.38
Tasks: 145 total, 1 running, 144 sleeping, 0 stopped, 0 zombie
Cpu(s): 20.5%us, 32.0%sy, 0.0%ni, 47.3%id, 0.3%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 4055036k total, 1402804k used, 2652232k free, 20796k buffers
Swap: 4187132k total, 0k used, 4187132k free, 290544k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2423 user 20 0 570m 225m 52m S 32.2 5.7 3:18.96 cgminer
1177 root 20 0 675m 111m 75m S 9.9 2.8 1:12.56 Xorg
2636 user 20 0 772m 150m 39m S 6.1 3.8 0:45.95 firefox-bin
4 root 20 0 0 0 0 S 1.7 0.0 0:15.12 kworker/0:0
2875 root 20 0 0 0 0 S 1.7 0.0 0:05.71 kworker/0:2
1491 user 20 0 176m 14m 9472 S 0.3 0.4 0:02.14 xfwm4
1740 user 20 0 269m 17m 10m S 0.3 0.4 0:04.81 xfce4-terminal
1483 user 20 0 64112 2904 1968 S 0.1 0.1 0:00.96 xscreensaver
1 root 20 0 24008 2136 1292 S 0.0 0.1 0:01.15 init
with sync objects to 0, same cgminer
top - 14:23:24 up 19 min, 3 users, load average: 4.33, 1.33, 0.73
Tasks: 145 total, 2 running, 143 sleeping, 0 stopped, 0 zombie
Cpu(s): 6.3%us, 93.7%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 4055036k total, 1383356k used, 2671680k free, 20900k buffers
Swap: 4187132k total, 0k used, 4187132k free, 290640k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3329 user 20 0 558m 213m 39m S 61.2 5.4 0:35.00 cgminer
2875 root 20 0 0 0 0 S 12.0 0.0 0:11.21 kworker/0:2
56 root 20 0 0 0 0 R 11.1 0.0 0:09.72 kworker/0:1
2636 user 20 0 774m 153m 39m S 6.9 3.9 0:53.69 firefox-bin
1177 root 20 0 675m 111m 75m S 4.9 2.8 1:19.33 Xorg
1491 user 20 0 176m 14m 9472 S 1.7 0.4 0:03.14 xfwm4
310 root 20 0 0 0 0 S 0.5 0.0 0:00.68 usb-storage
1740 user 20 0 269m 17m 10m S 0.4 0.4 0:05.10 xfce4-terminal
So either my CPU is too weak to handle 5 GPUs or cpu usage can be lower, but it does not depend on catalyst/amd sdk.
BTW I've tested catalyst 11.12 (11.11 gives problems installing) and 12.1 on xubuntu 11.10 64bit this morning with more or less same levels of CPU usage.
spiccioli