cpu-miner.c


Log

Author Commit Date CI Message
Con Kolivas 8f098e4a 2011-07-04T15:31:12 Put locking around the queued count to ensure we're never left without work.
Con Kolivas 122f0cf2 2011-07-04T13:59:24 With pre-emptive queueing of work there is no need to have extra work in the queue by default. Make it a list of extra queue items instead of a total and default to 0.
Con Kolivas 5007805d 2011-07-03T19:10:59 Update CPU reentrant scan code to work properly for extended periods up to scantime and adjust rate properly. Simplify locking in hashmeter since it's called relatively infrequently anyway. Set gpuminer hashmeter interval update to log interval / 5 as well.
Con Kolivas e4f9ea68 2011-07-03T09:32:15 CPU mining is spending too much time in the work thread and not receiving restart messages. Update the code to return at log interval / 5 and only get work at the right time.
Ycros 9fe21064 2011-06-25T08:18:29 Fixed up using config.h instead of cpuminer-config.h.
Con Kolivas 5cbc33e7 2011-07-03T22:36:56 Change default retry to 5 seconds.
Con Kolivas 8999bea1 2011-07-03T00:39:02 People expect miners to run indefinitely instead of giving up by default so change to never giving up if json call fails.
Con Kolivas edd0591e 2011-07-02T13:29:31 Make the number of queued work items configurable and default to 2.
Con Kolivas 131f60a5 2011-07-02T13:06:51 Move queueing of one request to separate function in preparation for variable length queues.
Con Kolivas de3d07d1 2011-07-03T22:14:32 Make the next work item queue 2/3 of the way through the work on the current work item. Load the first queued extra work in the main function to avoid having a once-off variable in get_work(). Load an extra set of work for each function in advance once a longpoll is detected since every thread will need to get new work. Discard requests with a separate function to ensure the right number is always queued.
Con Kolivas 9f726400 2011-07-02T21:42:14 Logic error in the queueing of work ended up generating more stale blocks. There is a small chance that a longpoll is signalled right at the start which would lead to a deadlock so check for first work before restart.
Con Kolivas ffdffe77 2011-07-02T12:12:35 Make sure the work gets attributed to the correct gpu. Add an fflush to stderr to minimise garbled output when multiple threads write at once.
Con Kolivas 86e40ed9 2011-07-02T09:44:29 Stale block control makes it possible to make 2 threads per gpu the default again.
Con Kolivas 594b38b8 2011-07-02T13:46:17 Fix redefinition of gnu source.
Con Kolivas 48caf248 2011-07-02T09:39:43 Check for stale block after failed submission as well.
Con Kolivas 09104ce3 2011-07-02T00:13:13 Flag the work back to just thread 0 used by all the threads to avoid lots of queued older work for each thread.
Con Kolivas ad787e1c 2011-07-03T19:39:47 Move the flushing of old work into restart threads so it's done before any worker threads grab more work.
Con Kolivas bed69215 2011-07-01T23:45:15 Get rid of the requirement for a static struct that needs locking to cache work. Make it possible to use the thread id for getting work again. Flag the getwork() function when we have a new block to explicitly discard any cached work when a new block is detected. Store the header of each new work and compare it to blocks we're about to submit to decide if they're stale due to a new block and don't try to submit them. This should significantly decrease the number of rejected blocks.
Con Kolivas e2fb3e84 2011-07-01T20:34:22 Queueing all kernel parameters dramatically reduces stale block rates.
ckolivas 7ae9afc4 2011-07-01T14:16:41 Profile points and warning clean ups.
ckolivas b54a3425 2011-07-01T13:58:43 Change default number of threads back to 1. The 2nd just increases the time taken to complete a work item thus increasing stale blocks, despite increasing the rate slightly.
Con Kolivas 88d9d631 2011-06-30T23:36:57 Use two separate curl instances for submit and get and use separate threads for each to prevent one blocking the other.
Con Kolivas 72baac08 2011-06-30T21:55:39 Clearly delineate the cpus from the gpus for their local data.
Con Kolivas 142576a9 2011-06-30T20:50:52 We already have gpu/cpu from id, so use that. Likely the current convoluted code is wrong and leading to segfaults!
Con Kolivas 18f8b0f9 2011-06-30T16:30:05 Submit work async is still unreliable and only used for cpu mining, so back it out for now.
Con Kolivas d5d4d1da 2011-06-30T14:41:01 Don't want to free the work data out of the transient structs.
Con Kolivas d100281d 2011-06-30T14:21:34 Make sure correct thread id is in work struct and correct cpu is set for per-cpu data.
Con Kolivas 998d8d45 2011-06-30T11:30:37 Postcalc hash is already its own thread so work can be submitted synchronously from that.
Con Kolivas 2b6e8416 2011-06-29T23:38:16 Use a buffer of up to 512 * 4 integers when retrieving work from the GPU. This allows each local thread id to have one slot to put any positive results into, thus making overlapping results far less likely. Thus races will be much rarer, allowing more threads. It should also pick up blocks close to each other more reliably and hopefully decrease the number of rejects and opencl errors. Do the search over the buffer entirely in a separate thread to allow the GPU to stay as busy as possible. Detach threads from themselves to prevent unlucky even where dereferencing occurs by freeing the data that stores the thread info.
ckolivas 6af84770 2011-06-29T11:30:06 Add spaces to make output clearer.
Con Kolivas a45c54aa 2011-06-27T11:31:05 Make postcalc_hash asynchronous as well.
Con Kolivas 378d18f8 2011-06-27T10:15:03 Submit all work asynchronously via a submit_work thread.
Con Kolivas 612c3a45 2011-06-27T09:32:12 Curl doesn't like multiple instances so go back to one instance.
Con Kolivas f0dcd127 2011-06-27T09:17:13 Show which cpu mining thread when giving affinity message.
Con Kolivas 58f6bf42 2011-06-26T16:21:58 Prevent 32bit overflow of local_mhashes as well.
Con Kolivas 00de8225 2011-06-26T15:28:33 Upper limit should be -hashes.
Con Kolivas c29a4322 2011-06-26T13:45:38 Only update the hashmeter once per second from gpu mining threads.
Con Kolivas 063adc64 2011-06-26T12:59:15 Implement runtime selectable numbers of GPU threads and rename CPU threads option.
Con Kolivas b6ae1db8 2011-06-26T10:53:16 The submit_lock is not required nor helpful.
Con Kolivas d1c0cccd 2011-06-26T09:09:07 Show correct GPU from thread number.
Con Kolivas f1114992 2011-06-26T09:07:52 Implement a potentially variable number of threads per gpu, setting it to 2 for now.
Con Kolivas 08f56f5f 2011-06-26T08:55:53 Set default CPU threads to 0 if GPU mining.
Con Kolivas 295ef0f9 2011-06-25T21:47:16 Discard accumulated work when longpoll indicates a new block.
Con Kolivas f44e8fac 2011-06-25T20:56:17 Curl appears to be not thread safe so only have one curl open at a time.
Con Kolivas 343ae851 2011-06-25T20:38:40 Intensity 5 is too high for a normal desktop causing unacceptable lag so change the default to 4.
Con Kolivas 88e2cf7b 2011-06-25T20:22:23 Initialise libcurl properly.
Con Kolivas 656b485d 2011-06-25T18:58:59 Make the worksize and vector width configurable.
Con Kolivas ead1281b 2011-06-25T18:27:56 Cleanup of return codes.
Con Kolivas f6486efb 2011-06-25T13:40:42 Make the getting of work asynchronous from the mining threads requests by always having one work item queued. This prevents drops in hash rates when getting work from a pool that is slow to respond. Use a local static struct work in get_work that is used to queue one extra work item.
Con Kolivas 0cef8f8d 2011-06-25T12:50:15 Default scan timeout of 5 seconds is way too short leading to abandoning blocks too early and being seen as an "inefficient" miner. Increase it to 60.
Con Kolivas d2cb012f 2011-06-25T10:07:29 Detach the thread once created so we don't have to explicitly try and join it.
ckolivas e1dd27c5 2011-06-29T11:19:43 Ensure that we don't overflow due to 32 bit limitations.
ckolivas b38a02bd 2011-06-29T11:14:16 Make the log time hash rate a rolling exponential average so it doesn't fluctuate so dramatically.
ckolivas 08a78210 2011-06-29T10:12:00 Make the log show what the thread is: cpu or gpu and what number.
ckolivas f490143a 2011-06-29T09:22:21 Add local thread count to info, store hw error count, and make share submission debug only.
Con Kolivas e016d0c8 2011-06-28T23:41:57 Increase maximum intensity configurable to 14.
Con Kolivas dfc52fd5 2011-06-28T21:46:09 Make sure we can have gpu and cpu threads running.
Con Kolivas 24a28e29 2011-06-28T21:28:50 Make it possible to run as a pure cpu miner by setting gpu threads to 0.
ckolivas e1d01d06 2011-06-28T11:18:26 Minor fixes.
Con Kolivas 6374e0fa 2011-06-28T21:11:04 Import the phatk kernel. Enable it only for hardware with amd media ops for now since it crashes nvidia et. al. Fallback to the poclbm kernel for the rest. Try harder to avoid stale blocks around longpoll detecting new blocks.
Con Kolivas 948b514c 2011-06-27T12:02:47 The buffer needs to be flushed before enqueueing the kernel again. Further optimise the mining loop by removing the need_work bool.
Con Kolivas b7a17753 2011-06-25T09:56:37 Make a separate thread for work submission that returns immediately so that miner threads aren't kept waiting when submitting results to slow pools.
ckolivas e8f4eead 2011-06-24T16:24:53 Use total mhashes as a counter to prevent 32 bit overflows.
Con Kolivas 910e6943 2011-06-19T22:21:51 Increase baseline threads to 1<<22. Make total counter regularly update every 5 seconds. Only write the blank buffer when it needs to be blanked.
ckolivas 6b77d850 2011-06-17T14:00:41 Fixes.
ckolivas f7926088 2011-06-24T10:55:05 Limit intensity to 10. Anything larger overflows. Simplify test for new work.
ckolivas feb8cfc8 2011-06-24T09:51:54 applog fixes.
ckolivas b19ee2f5 2011-06-24T09:39:33 Make sure a GPU doesn't work on a block longer than opt_scantime.
ckolivas 26546ad5 2011-06-24T09:17:09 Make the optimisations per-gpu card and update code to work properly with multiple cards.
Con Kolivas 852e78e7 2011-06-23T22:09:49 Fix mutex unlocking with only one thread and opt_log_interval.
Con Kolivas 70f73576 2011-06-23T21:58:46 Make the output display the 5 second and total average Mhash/s. Make the log interval configurable.
Con Kolivas debe7776 2011-06-23T21:23:46 Use cpu_from_thr_id when binding threads.
Con Kolivas 4cd5f47e 2011-06-23T21:09:22 Revert "Multiple compiler warning fixes." This reverts commit a5cbfbde2610e9f60e14b41a4e0595bcb34c772a. Broke.
Con Kolivas 88761e6c 2011-06-23T21:04:29 Multiple compiler warning fixes.
ckolivas 19eea906 2011-06-23T17:50:37 Implement code detecting max work size and optimal vector width. Use this to patch the kernel to suit the idea values for the card. Then use these values when invoking the kernel.
ckolivas 237a5067 2011-06-23T15:28:12 Skip trying to start thread of GPUs that don't successfully initcl().
ckolivas 14ca8883 2011-06-23T14:59:17 Update help.
ckolivas c08be809 2011-06-23T14:56:27 Fix the setting of number of processors. Add scan intensity variable.
ckolivas 2ab6180d 2011-06-23T10:34:40 Reset count once all threads are started to avoid slow rate being shown initially. Update copyright notice and comments.
Con Kolivas 932ff72f 2011-06-22T23:35:23 The gpuminer thread uses very little cpu and needs to keep the gpu busy with as few delays as possible. Don't nice it.
Con Kolivas f54d2cc0 2011-06-22T23:07:30 Make poclbm use 4 vectors and decrease worksize to keep pipelines fullish. Make it possible to have 0 CPU threads and update docs. Fix counter with no cpu threads.
ckolivas 66240481 2011-06-22T15:39:27 Fix deref.
ckolivas fa2f6b19 2011-06-22T13:54:06 Unwind.
ckolivas 79fec01a 2011-06-22T12:27:57 Remove the input buffer and just pass args to the kernel as per plugin design.
Con Kolivas f117675a 2011-06-22T10:15:23 Optimise work loop to make cl calls asynchronous where possible.
Con Kolivas f05270b8 2011-06-22T01:19:19 Optimise loop and make debug debug only.
Con Kolivas 91e5cef3 2011-06-22T00:13:46 Actually get first BFI_INT patch working.
ckolivas ce3382ca 2011-06-14T16:26:34 Don't run gpu thread idle prio.
Con Kolivas dde70397 2011-06-14T10:32:54 Merge gpumining from oclmine. Unstable.
ckolivas 51817422 2011-06-14T14:09:10 Cope with older linux kernel headers that don't have the newer scheduling policies defined.
Con Kolivas 0a8ac14c 2011-06-12T14:26:26 Forgot the else.
Con Kolivas 4f8045c2 2011-06-12T11:40:15 Only increase solutions count when confirmed true.
Con Kolivas ce750e42 2011-06-12T01:35:08 Add a solution counter to the output.
Con Kolivas 7062557e 2011-06-12T01:19:04 Implement global hash rate counter through mutex lock protected data. Make the output easier to read. Don't do hashmeter updates if no output is requested. Remove redundant output when using a single thread.
Jeff Garzik 4d6be0c1 2011-06-09T03:47:07 Fix number-of-threads init logic on Windows
Jeff Garzik 8e0e2493 2011-06-08T22:30:10 only read processor count via sysconf on non-Windows platforms
ckolivas 262b98ca 2011-06-09T11:45:06 Linux + x86_64 optimisations. Add likely() macro. Optimise a few obvious code paths with likely/unlikely. Change algo to sse2_amd64 by default. Move priority change to worker threads only. Detect number of CPUs and set default number of threads == CPUs. Add scheduling policy change to worker threads to SCHED_IDLE first and fallback to SCHED_BATCH on linux. Don't error when failing to set priority. Add CPU affinity and bind worker threads to CPUs when number of threads is a multiple of number of CPUs. Update NEWS with changes.
Jeff Garzik 69529c38 2011-03-24T14:09:49 Support full URL, in X-Long-Polling header
Jeff Garzik 46819af3 2011-03-21T20:50:59 --user/--pass fixes Also, some newline fixes (applog callers do not need newlines in strings)
Jeff Garzik 81352ca4 2011-03-21T04:27:02 Support --user and --pass, as alternative to --userpass