OpenCL GPU miner
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Con Kolivas fa91f6a664 Add some defines to configure.ac to enable exporting of values and packaging, and clean up output. 14 years ago
ccan Moved pthread mutex inits up, due to applog using a mutex causing a crash. 14 years ago
compat Move to newer jansson library. 14 years ago
lib Mingw suseconds_t and sigaction fixes. 14 years ago
m4 Mingw suseconds_t and sigaction fixes. 14 years ago
x86_32 Gitignore 14 years ago
x86_64 Update to latest sse2 code from cpuminer-ng. 14 years ago
.gitignore Rename code and application binary to cgminer version 1.0.9 preempting version 1.1.0, moving main code to main.c. 14 years ago
AUTHORS Rename code and application binary to cgminer version 1.0.9 preempting version 1.1.0, moving main code to main.c. 14 years ago
COPYING Convert over to autotools. Release version 0.1. 14 years ago
ChangeLog Doc updates. 14 years ago
LICENSE Convert over to autotools. Release version 0.1. 14 years ago
Makefile.am Doc updates. 14 years ago
NEWS News update. 14 years ago
README Update README. 14 years ago
arg-nonnull.h Added previously missing gnulib files. 14 years ago
autogen.sh autogen.sh fix 14 years ago
bench_block.h Remove benchmark data from main.c 14 years ago
c++defs.h Added previously missing gnulib files. 14 years ago
compat.h Fix suseconds_t for OSX. 14 years ago
configure.ac Add some defines to configure.ac to enable exporting of values and packaging, and clean up output. 14 years ago
elist.h Move all RPC I/O to separate thread. 14 years ago
example-cfg.json example-cfg.json: remove extraneous commas, which broke JSON decode 14 years ago
findnonce.c Move to 256 sized buffers and don't risk overwrite by using only 127 mask. 14 years ago
findnonce.h The worksize was unintentionally changed back to 4k by mistake, this caused a slowdown. 14 years ago
linux-usb-cgminer It's 8, not cool 8) 14 years ago
main.c Statify tv_sort. 14 years ago
miner.h Check for SSE2 before trying to build 32 bit SSE2 assembly version. Prevents build failure when yasm is installed but -msse2 is not specified. 14 years ago
mkinstalldirs Build on windows using mingw32. 14 years ago
mknsis.sh Windows build tweaks. 14 years ago
ocl.c Confusion over the variable name for number of devices was passing a bogus value which likely was causing the zero sized binary issue. 14 years ago
ocl.h Revert "Restart threads by abstracting out the clcontext initialisation and using that instead of probing all cards." 14 years ago
phatk110817.cl Remove fragile source patching for bitalign, vectors et. al and simply pass it with the compiler options. 14 years ago
poclbm110817.cl Remove fragile source patching for bitalign, vectors et. al and simply pass it with the compiler options. 14 years ago
sha256_4way.c Update CPU reentrant scan code to work properly for extended periods up to scantime and adjust rate properly. 14 years ago
sha256_cryptopp.c Fix CPU mining with other algorithms not working. 14 years ago
sha256_generic.c Fix CPU mining with other algorithms not working. 14 years ago
sha256_sse2_amd64.c Update to latest sse2 code from cpuminer-ng. 14 years ago
sha256_sse2_i386.c Implement SSE2 32 bit assembly algorithm as well. 14 years ago
sha256_sse4_amd64.c Add an sse4 algorithm to CPU mining. 14 years ago
sha256_via.c Fix CPU mining with other algorithms not working. 14 years ago
uthash.h Move staged threads to hashes so we can sort them by time. 14 years ago
util.c Disable curl debugging with opt protocol since it spews to stderr. 14 years ago
warn-on-use.h Added previously missing gnulib files. 14 years ago

README


This is a multi-threaded multi-pool CPU and GPU miner for bitcoin and
derivative coins.

GIT TREE:

https://github.com/ckolivas/cgminer

Support thread:

http://forum.bitcoin.org/index.php?topic=28402.0

IRC Channel:

irc://irc.freenode.net/cgminer

License: GPLv2. See COPYING for details.

Dependencies:
libcurl http://curl.haxx.se/libcurl/
libncurses5-dev (or libpdcurses on WIN32)
pkg-config http://www.freedesktop.org/wiki/Software/pkg-config
jansson http://www.digip.org/jansson/
(jansson is included in-tree and not necessary)

Basic *nix build instructions:
To build with GPU mining support:
Install AMD APP sdk, latest version - there is no official place to
install it so just keep track of where it is if you're not installing
the include files and library files into the system directory.
(Do NOT install the ati amd sdk if you are on nvidia)

The easiest way to install the ATI AMD SPP sdk on linux is to actually put it
into a system location. Then building will be simpler. Download the correct
version for either 32 bit or 64 bit from here:
http://developer.amd.com/sdks/AMDAPPSDK/downloads/Pages/default.aspx

This will give you a file with a name like AMD-APP-SDK-v2.4-lnx64.tgz

Then:

sudo su
cd /opt
tar xf /path/to/AMD-APP-SDK-v2.4-lnx64.tgz
cd /
tar xf /opt/AMD-APP-SDK-v2.4-lnx64/icd-registration.tgz
ln -s /opt/AMD-APP-SDK-v2.4-lnx64/include/CL /usr/include
ln -s /opt/AMD-APP-SDK-v2.4-lnx64/lib/x86_64/* /usr/lib/
ldconfig

If you are on 32 bit, x86_64 in the 2nd last line should be x86

To actually build:

./autogen.sh # only needed if building from git repo
CFLAGS="-O2 -Wall -march=native" ./configure
or if you haven't installed the ati files in system locations:
CFLAGS="-O2 -Wall -march=native -I<path to AMD APP include>" LDFLAGS="-L<path to AMD APP lib/x86_64> ./configure
make

If it finds the opencl files it will inform you with
"OpenCL: FOUND. GPU mining support enabled."

Basic WIN32 build instructions (on Fedora 13; requires mingw32):
./autogen.sh # only needed if building from git repo
rm -f mingw32-config.cache
MINGW32_CFLAGS="-O2 -Wall -msse2" mingw32-configure
make
./mknsis.sh

Native WIN32 build instructions (on mingw32, on windows):
Install the Microsoft platform SDK
Install AMD APP sdk, latest version (only if you want GPU mining)
(Do NOT install the ati amd sdk if you are on nvidia)
Install mingw32
Install libcurl, copy libcurl.m4 into /mingw/share/aclocal
Install pkg-config, copy pkg.m4 into /mingw/share/aclocal
Run:
autoreconf -fvi
CFLAGS="-O2 -msse2" ./configure
make

Usage instructions: Run "cgminer --help" to see options.

---

EXECUTIVE SUMMARY ON USAGE:

Single pool, regular desktop:

cgminer -o http://pool:port -u username -p password

Single pool, dedicated miner:

cgminer -o http://pool:port -u username -p password -I 8

Multiple pool, dedicated miner:

cgminer -o http://pool1:port -u pool1username -p pool1password -o http://pool2:port -u pool2usernmae -p pool2password -I 8

---

WHILE RUNNING:

The following options are available while running with a single keypress:

[P]ool management [S]ettings [D]isplay options [Q]uit

P gives you:

Current pool management strategy: Failover
[A]dd pool [R]emove pool [D]isable pool [E]nable pool
[C]hange management strategy [S]witch pool [I]nformation


S gives you:

[D]ynamic mode: On
[L]ongpoll: On
[I]ntensity: Dynamic
[Q]ueue: 0
[S]cantime: 60
[R]etries: -1
[P]ause: 5


D gives you:

Toggle: [D]ebug [N]ormal [S]ilent [V]erbose [R]PC debug
[L]og interval [C]lear


and Q quits the application.


---
Also many issues and FAQs are covered in the forum thread
dedicated to this program,
http://forum.bitcoin.org/index.php?topic=28402.0

The output line shows the following:
[(5s):204.4 (avg):203.1 Mh/s] [Q:56 A:51 R:4 HW:0 E:91% U:2.47/m]

Each column is as follows:
A 5 second exponentially decaying average hash rate
An all time average hash rate
The number of requested work items
The number of accepted shares
The number of rejected shares
The number of hardware erorrs
The efficiency defined as the accepted shares / requested work
The utility defines as the number of shares / minute

The cgminer status line shows:
TQ: 1 ST: 1 SS: 0 DW: 0 NB: 1 LW: 8 LO: 1 RF: 1 I: 2

TQ is Total Queued work items.
ST is STaged work items (ready to use).
SS is Stale Shares discarded (detected and not submitted so don't count as rejects)
DW is Discarded Work items (work from block no longer valid to work on)
NB is New Blocks detected on the network
LW is Locally generated Work items (during slow server providing work)
LO is Local generation Occasions (server slow to provide work)
RF is Remote Fail occasions (server slow to accept work)
I is current Intensity (changes in dynamic mode).

NOTE: Running intensities above 9 with current hardware is likely to only
diminish return performance even if the hash rate might appear better. A good
starting baseline intensity to try on dedicated miners is 8. Higher values are
there to cope with future improvements in hardware.


FAILOVER STRATEGIES WITH MULTIPOOL:
A number of different strategies for dealing with multipool setups are
available. Each has their advantages and disadvantages so multiple strategies
are available by user choice, as per the following list:

FAILOVER:
The default strategy is failover. This means that if you input a number of
pools, it will try to use them as a priority list, moving away from the 1st
to the 2nd, 2nd to 3rd and so on. If any of the earlier pools recover, it will
move back to the higher priority ones.

ROUND ROBIN:
This strategy only moves from one pool to the next when the current one falls
idle and makes no attempt to move otherwise.

ROTATE:
This strategy moves at user-defined intervals from one active pool to the next,
skipping pools that are idle.

LOAD BALANCE:
This strategy sends work in equal amounts to all the pools specified. If any
pool falls idle, the rest will take up the slack keeping the miner busy.

---
LOGGING

cgminer will log to stderr if it detects stderr is being redirected to a file.
To enable logging simply add 2>logfile.txt to your command line and logfile.txt
will contain the logged output at the log level you specify (normal, verbose,
debug etc.)

In other words if you would normally use:
./cgminer -o xxx -u yyy -p zzz
if you use
./cgminer -o xxx -u yyy -p zzz 2>logfile.txt
it will log to a file called logfile.txt and otherwise work the same.


There is also the -m option on linux which will spawn a command of your choice
and pipe the output directly to that command.

---
FAQ

Q: cgminer segfaults when I change my shell window size.
A: Older versions of libncurses have a bug to do with refreshing a window
after a size change. Upgrading to a new version of curses will fix it.

Q: Can I mine on servers from different networks (eg smartcoin and bitcoin) at
the same time?
A: No, cgminer keeps a database of the block it's working on to ensure it does
not work on stale blocks, and having different blocks from two networks would
make it invalidate the work from each other.

Q: Can I change the settings individually for each GPU?
A: Not currently.

Q: Can I put multiple pools in the json config file?
A: Not currently, but you can use multiple config files and specify each with
successive -c. e.g.: cgminer -c cfg1.json -c cfg2.json

Q: The build fails with gcc is unable to build a binary.
A: Remove the "-march=native" component of your CFLAGS as your version of gcc
does not support it.

Q: The CPU usage is high.
A: If you're on linux, the ATI drivers after 11.6 have a bug that makes them
consume 100% of one CPU core unnecessarily so downgrade to 11.6. If you're on
windows, you may be out of luck because the pthread library used consumes a
lot of CPU.

Q: Can you implement feature X?
A: I can, but time is limited, and people who donate are more likely to get
their feature requests implemented.

Q: My GPU hangs and I have to reboot it to get it going again?
A: The more aggressively the mining software uses your GPU, the less overclock
you will be able to run. You are more likely to hit your limits with cgminer
and you will find you may need to overclock your GPU less aggressively. The
software cannot be responsible and make your GPU hang directly.

---

This code is provided entirely free of charge by the programmer in his spare
time so donations would be greatly appreciated.

Con Kolivas <kernel@kolivas.org>
15qSxP1SQcUX3o4nhkfdbgyoWEFMomJ4rZ