OK Taco, thanks a lot.
With 7970 I achieved around 565 Kh/s with cgminer. I will try reaper if needed.
8GB, got it.
Topic: Consolidated Litecoin Mining Guide for 5xxx, 6xxx, and 7xxx GPUs - page 29. (Read 624200 times)
March 11, 2013, 06:23:12 PM
March 11, 2013, 06:02:48 PM
RAM REQUIREMENTS ON-MOTHERBOARD
The equivalent amount of system RAM as for the sum of all the vRAM used by the GPUs is required when mining with reaper. For instance, 3x 5970s mining with thread_concurrency values of 8000 each would require 3x 500MB = 1500MB system ram (plus additional RAM for the OS). The memory requirements for 7xxx cards are also higher because of larger thread_concurrency values, for instance a thread_concurrency of 24000 means 1.5GB system RAM per card is required.
The equivalent amount of system RAM as for the sum of all the vRAM used by the GPUs is required when mining with reaper. For instance, 3x 5970s mining with thread_concurrency values of 8000 each would require 3x 500MB = 1500MB system ram (plus additional RAM for the OS). The memory requirements for 7xxx cards are also higher because of larger thread_concurrency values, for instance a thread_concurrency of 24000 means 1.5GB system RAM per card is required.
Quote
You shouldn't need a lot of RAM for cgminer, it offloads it to the GPU unlike reaper which for some odd reason keeps it in the system RAM. reaper is coded really sloppily while cgminer is pretty immaculate.
So I am trying to figure out how much memory will I need for two rigs, mining only with cgminer:
First rig: 4 x 5870 and 1 x 6990 with 2GB RAM already on the motherboard
Second rig: 4 x 7970 ......................with 2GB RAM already on the motherboard
Can you give me an estimation?
Thanks.
2GB for the first rig is fine as long as you are only using cgminer.
With the 7970s, you're going to want to use reaper to achieve the highest hash rates at the lowest possible power consumption. You will need ~1.5 GB * 4 = 6 GB + 1 GB system = 7 GB RAM minimum. Although, you can use 2 GB and cgminer if you want, I just overall much prefer reaper for 7xxx series. 8 GB of RAM is only $40 now, so.
March 11, 2013, 06:00:30 PM
tacotime, thanks for this guide!!
I tried mining with my 7970, but I can't make more than 550kH/s (with core:1050, mem:1600). I've tried reaper and cgminer with tons of different configurations.
I use Windows7 x64 and Catalyst 13.1 - might this be a problem? Should I use Linux? A different AMD driver?
I tried mining with my 7970, but I can't make more than 550kH/s (with core:1050, mem:1600). I've tried reaper and cgminer with tons of different configurations.
I use Windows7 x64 and Catalyst 13.1 - might this be a problem? Should I use Linux? A different AMD driver?
As it says in the guide, use a ratio of 0.57
1050 MHz core / 0.57 = ~1840 MHz RAM clocks; you are only using memory clocks of 1600 MHz. The only way you can hit 1840 MHz RAM is by overvolting the RAM in afterburner.
Try instead 950 MHz core / 0.57 = ~1670 MHz RAM clocks, you should get over 550 KH/s with less heat
March 11, 2013, 05:57:28 PM
I run my 6970 at 915 MHz with a ratio of 0.8
saphirre trixx sucks balls
whenever i set manual fan control it changes for a few seconds to my trixx setting then it reverts back to the cards default setting
what would that make your memory clock?
i took core*0.8 * 2 (ddr effective rate?) and got 1464 if thats your mem clock then using that ratio doesn't get me any more khash than the stock ratio of memory to gpu which is 800/1250 = 0.64
915 MHz / 0.8 = approx 1150 MHz
I think I get like 20-30 more kh/s at 1350 MHz, at the expense of more heat
March 11, 2013, 05:48:25 PM
RAM REQUIREMENTS ON-MOTHERBOARD
The equivalent amount of system RAM as for the sum of all the vRAM used by the GPUs is required when mining with reaper. For instance, 3x 5970s mining with thread_concurrency values of 8000 each would require 3x 500MB = 1500MB system ram (plus additional RAM for the OS). The memory requirements for 7xxx cards are also higher because of larger thread_concurrency values, for instance a thread_concurrency of 24000 means 1.5GB system RAM per card is required.
The equivalent amount of system RAM as for the sum of all the vRAM used by the GPUs is required when mining with reaper. For instance, 3x 5970s mining with thread_concurrency values of 8000 each would require 3x 500MB = 1500MB system ram (plus additional RAM for the OS). The memory requirements for 7xxx cards are also higher because of larger thread_concurrency values, for instance a thread_concurrency of 24000 means 1.5GB system RAM per card is required.
Quote
You shouldn't need a lot of RAM for cgminer, it offloads it to the GPU unlike reaper which for some odd reason keeps it in the system RAM. reaper is coded really sloppily while cgminer is pretty immaculate.
So I am trying to figure out how much memory will I need for two rigs, mining only with cgminer:
First rig: 4 x 5870 and 1 x 6990 with 2GB RAM already on the motherboard
Second rig: 4 x 7970 ......................with 2GB RAM already on the motherboard
Can you give me an estimation?
Thanks.
March 11, 2013, 05:38:18 PM
tacotime, thanks for this guide!!
I tried mining with my 7970, but I can't make more than 550kH/s (with core:1050, mem:1600). I've tried reaper and cgminer with tons of different configurations.
I use Windows7 x64 and Catalyst 13.1 - might this be a problem? Should I use Linux? A different AMD driver?
I tried mining with my 7970, but I can't make more than 550kH/s (with core:1050, mem:1600). I've tried reaper and cgminer with tons of different configurations.
I use Windows7 x64 and Catalyst 13.1 - might this be a problem? Should I use Linux? A different AMD driver?
March 11, 2013, 05:36:00 PM
I run my 6970 at 915 MHz with a ratio of 0.8
saphirre trixx sucks balls
whenever i set manual fan control it changes for a few seconds to my trixx setting then it reverts back to the cards default setting
what would that make your memory clock?
i took core*0.8 * 2 (ddr effective rate?) and got 1464 if thats your mem clock then using that ratio doesn't get me any more khash than the stock ratio of memory to gpu which is 800/1250 = 0.64
March 11, 2013, 05:28:55 PM
I run my 6970 at 915 MHz with a ratio of 0.8
March 11, 2013, 05:22:47 PM
What should I overclock a 6950 to?
what ratio is the memory supposed to be from the core clock
what ratio is the memory supposed to be from the core clock
March 09, 2013, 01:10:25 AM
Like it has previously been stated in this thread, I can't get my 7970 to run in Reaper with thread concurrencies of 20992, 21712, or 24000 and lookup gap set to 2. Reaper just crashes immediately. Thoughts?
what error does it give? OS, driver/sdk versions? reaper version? March 09, 2013, 01:09:53 AM
anyone can tell me the power consumption of HD5850 when mining ltc ?
depends on volts/clocks. stock it should be the same as the tdp. March 09, 2013, 01:09:28 AM
thanks taco! whats your LTC address?
LiK1rotC2tNYNRbRfW2xsKLYJvKhQ3PwTN
March 09, 2013, 01:07:55 AM
Like it has previously been stated in this thread, I can't get my 7970 to run in Reaper with thread concurrencies of 20992, 21712, or 24000 and lookup gap set to 2. Reaper just crashes immediately. Thoughts?
March 09, 2013, 01:04:16 AM
anyone can tell me the power consumption of HD5850 when mining ltc ?
March 06, 2013, 07:22:40 AM
Intensity/aggression 13 or 14 is best if you still want to use the computer
People who have pmed me, I'm sick w flu, will get back to you soon
People who have pmed me, I'm sick w flu, will get back to you soon
thanks taco! whats your LTC address?
March 05, 2013, 10:14:37 AM
made that change, now reaper.exe closes instantly when I open it
Edit: was using reaper v12, changed to v13b4 seems to be working
Quite a bit of slowdown in windows, what is the closest setting to intensity for bitcoin?
LTC tips for the help!
Edit: was using reaper v12, changed to v13b4 seems to be working
Quite a bit of slowdown in windows, what is the closest setting to intensity for bitcoin?
LTC tips for the help!
Like taco said But i have run at 12 to use my comp so it may vary
March 05, 2013, 09:10:30 AM
Intensity/aggression 13 or 14 is best if you still want to use the computer
People who have pmed me, I'm sick w flu, will get back to you soon
People who have pmed me, I'm sick w flu, will get back to you soon
March 05, 2013, 06:23:46 AM
made that change, now reaper.exe closes instantly when I open it
Edit: was using reaper v12, changed to v13b4 seems to be working
Quite a bit of slowdown in windows, what is the closest setting to intensity for bitcoin?
LTC tips for the help!
Edit: was using reaper v12, changed to v13b4 seems to be working
Quite a bit of slowdown in windows, what is the closest setting to intensity for bitcoin?
LTC tips for the help!
March 04, 2013, 10:59:41 PM
Reaper.conf is invalid, see 1st page
March 04, 2013, 10:46:29 PM
After following the guide for 7970, I get spammed with Error from server, I think have typed in the server info correctly
reaper.conf
Any ideas?
reaper.conf
Code:
kernel reaper.cl
save_binaries yes
enable_graceful_shutdown no
long_polling yes
platform 0
device 0
# device 1
# device 2
# device 3
mine litecoin
litecoin.confsave_binaries yes
enable_graceful_shutdown no
long_polling yes
platform 0
device 0
# device 1
# device 2
# device 3
mine litecoin
Code:
host ltc.kattare.com
port 9332
user
pass
protocol litecoin
worksize 256
vectors 1
aggression 20
threads_per_gpu 1
sharethreads 32
lookup_gap 2
gpu_thread_concurrency 21712
port 9332
user
pass
protocol litecoin
worksize 256
vectors 1
aggression 20
threads_per_gpu 1
sharethreads 32
lookup_gap 2
gpu_thread_concurrency 21712
Any ideas?
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