Is it possible to copy a wallet.dat file from one computer to another and access the same wallet in two places? For instance, on a home PC and a work PC?

I'm a newbie, so I can't post to the proper forum, I'm hoping someone will take pity on me and help with a cgminer problem.

I'm running cgminer 2.3.1 (latest version) on Windows 7 with a pair of Radeon HD 6670 cards. One card has dual monitors attached to it, the other is just there for mining. At night when I'm not using the PC, I run with a configuration that runs two threads per GPU - no problems there. During the workday, I have cgminer configured to use only the headless GPU for mining - it's effectively disabled on the GPU that has my displays attached. However, it's still severely affecting my display performance - screen refreshes are painfully slow. I didn't have this problem before installing the second GPU, so I'm thinking it's likely something I have configured incorrectly.

Here's my daytime cgminer config:

Code:

{
"pools" : [
	{
		"url" : "*****",
		"user" : "*****",
		"pass" : "*****"
	}
],

"device" : "1",
"gpu-threads" : "0,2",
"gpu-engine" : "800,850",
"gpu-memclock" : "667,800",
"auto-fan" : true,
"temp-target" : "75",
"temp-overheat" : "80",
"temp-cutoff" : "85",
"temp-hysteresis" : "3",

"kernel-path" : ".",
"intensity" : "d,7",
"expiry" : "120",
"failover-only" : true,
"log" : "5",
"queue" : "1",
"retry-pause" : "5",
"scan-time" : "60",

"donation" : "0.1"
}

Shouldn't the line "device" : "1" effectively disable device 0 as far as mining is concerned? The cgminer output makes it look like it's disabled, but it doesn't perform like it's disabled. Here's the cgminer console screen header, clearly showing that GPU 0 (the display card) is "OFF":

Code:

 cgminer version 2.3.1 - Started: [2012-03-06 12:49:21]
--------------------------------------------------------------------------------
 (5s):63.3 (avg):79.9 Mh/s | Q:3  A:0  R:0  HW:0  E:0%  U:0.00/m
 TQ: 1  ST: 1  SS: 0  DW: 0  NB: 1  LW: 0  GF: 0  RF: 0
 Connected to ***** with LP as user *****
 Block: 0000043571d84726ffaaa1064d78b8ca...  Started: [12:49:21]
--------------------------------------------------------------------------------
 [P]ool management [G]PU management [S]ettings [D]isplay options [Q]uit
 GPU 0:  35.0C  80%    | OFF  /  0.0Mh/s | A:0 R:0 HW:0 U:0.00/m I: 0
 GPU 1:  55.5C  84%    | 112.2/118.5Mh/s | A:0 R:0 HW:0 U:0.00/m I: 7
--------------------------------------------------------------------------------

I had better display performance before I added the second dedicated Radeon HD 6670, and was using one card (with just one mining thread) for both mining and driving my two monitors.

Any help will be greatly appreciated!

I would post this in the cgminer specific thread, but I'm a newbie on this forum so I can only post here.

I have a pair of HD 6670s, one used for Windows 7 desktop/mining, the other dedicated to mining. I'm trying to configure cgminer to use these optimally, and I'm having trouble figuring it out.

Here is my current config:

Code:

{
"pools" : [
	{
		"url" : "*****",
		"user" : "*****",
		"pass" : "*****"
	}
],

"gpu-threads" : "1,4",
"auto-gpu" : true,
"gpu-engine" : "800,800",
"gpu-memclock" : "667,800",
"auto-fan" : true,
"temp-target" : "75",
"temp-overheat" : "80",
"temp-cutoff" : "85",
"temp-hysteresis" : "3",

"kernel-path" : ".",
"intensity" : "dynamic,7",
"expiry" : "120",
"failover-only" : true,
"log" : "5",
"queue" : "1",
"retry-pause" : "5",
"scan-time" : "60",

"donation" : "0.1"
}

I'm only starting one thread on GPU0 (which my monitors are connected to), and 4 threads on GPU1. I have intensity set to dynamic on GPU0 and 7 on GPU1. For driver stability reasons, I'm not overclocking either GPU (I have the engine and memclock values set to the default values shown in AMD Catalyst Control Center).

The problem I'm having is that on GPU1 (the miner-dedicated GPU), it appears to be actually starting only 2 threads, even though I'm telling it to start 4 (as you can see from the output below):

Code:

 cgminer version 2.3.1 - Started: [2012-03-05 11:50:57]
--------------------------------------------------------------------------------
 (5s):163.9 (avg):204.8 Mh/s | Q:94  A:29  R:0  HW:0  E:31%  U:2.27/m
 TQ: 1  ST: 3  SS: 0  DW: 6  NB: 2  LW: 0  GF: 0  RF: 0
 Connected to *****
 Block: 000003b69e4ed8dfaef9a52447401857...  Started: [11:54:52]
--------------------------------------------------------------------------------
 [P]ool management [G]PU management [S]ettings [D]isplay options [Q]uit
 GPU 0:  62.5C   0%    |  98.6/ 98.3Mh/s | A:17 R:0 HW:0 U:1.33/m I: 3
 GPU 1:  75.5C  85%    | 106.6/106.9Mh/s | A:13 R:0 HW:0 U:1.02/m I: 7
--------------------------------------------------------------------------------

GPU 0: 98.5 / 98.3 Mh/s | A:14  R:0  HW:0  U:1.20/m  I:3
62.5 C  F: 0 2.191967E-317: 800 MHz  M: 667 Mhz  V: 1.100V  A: 91%  P: 0%
Last initialised: [2012-03-05 11:50:57]
Intensity: Dynamic (only one thread in use)
Thread 0: 98.6 Mh/s Enabled ALIVE
Thread 1: 0.0 Mh/s Enabled ALIVE paused

GPU 1: 106.2 / 107.1 Mh/s | A:12  R:0  HW:0  U:1.03/m  I:7
75.5 C  F: 85 2.191967E-317: 800 MHz  M: 800 Mhz  V: 1.100V  A: 99%  P: 0%
Last initialised: [2012-03-05 11:50:57]
Intensity: 7
Thread 2: 53.3 Mh/s Enabled ALIVE
Thread 3: 53.3 Mh/s Enabled ALIVE

[E]nable [D]isable [I]ntensity [R]estart GPU [C]hange settings
Or press any other key to continue

Why is that? Is there anything I can do to fix it? Or should I only be running 2 threads?

It may be worth noting that GPU0 is in a PCIe x16 slot and GPU1 is in a PCIe x4 slot (that's the best I can do with my current system). Is that a problem?