Version 2.0

- Test the whole hash instead of just looking at the high 32 bits
- Set idle priority on Windows
- Fix parameters -u and -p, and add short options -o and -O
- Fix example JSON configuration file

AUTHORS

@@ -2,6 +2,4 @@ Jeff Garzik <jgarzik@pobox.com>
 
 ArtForz
 
-<very tiny tweaks> Lolcust
-
 pooler <pooler@litecoinpool.org>

NEWS

@@ -1,3 +1,16 @@
+Version 2.0 - Jan 16, 2012
+
+- Change default port to 9332 for Litecoin and remove default credentials
+- Add 'scrypt' as the default algorithm and remove other algorithms (ArtForz)
+- Optimize scrypt for x86 and x86-64
+- Test the whole hash instead of just looking at the high 32 bits
+- Add configurable timeout, with a default of 180 seconds
+- Add share summary output (inlikeflynn)
+- Fix priority and CPU count detection on Windows
+- Fix parameters -u and -p, and add short options -o and -O
+
+Version 1.0.2 - Jun 13, 2011
+
 - Linux x86_64 optimisations - Con Kolivas
 - Optimise for x86_64 by default by using sse2_64 algo
 - Detects CPUs and sets number of threads accordingly

README

@@ -1,4 +1,5 @@
-This is a multi-threaded CPU miner for Litecoin, fork of Jeff Garzik's reference cpuminer.
+This is a multi-threaded CPU miner for Litecoin, fork of Jeff Garzik's
+reference cpuminer.
 
 
 License: GPLv2.  See COPYING for details.
@@ -10,13 +11,13 @@ Dependencies:
 
 Basic *nix build instructions:
 	./autogen.sh	# only needed if building from git repo
-	CFLAGS="-O3 -Wall -msse2" ./configure
+	./configure CFLAGS="-O3"
 	make
 
 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="-O3 -Wall -msse2" mingw32-configure
+	MINGW32_CFLAGS="-O3" mingw32-configure
 	make
 	./mknsis.sh
 

compat.h

@@ -16,8 +16,7 @@ enum {
 
 static inline int setpriority(int which, int who, int prio)
 {
-	/* FIXME - actually do something */
-	return 0;
+	return -!SetPriorityClass(GetCurrentProcess(), IDLE_PRIORITY_CLASS);
 }
 
 #endif /* WIN32 */

configure.ac

@@ -1,4 +1,4 @@
-AC_INIT([cpuminer], [1.0.2])
+AC_INIT([cpuminer], [2.0])
 
 AC_PREREQ(2.52)
 AC_CANONICAL_SYSTEM

cpu-miner.c

@@ -23,6 +23,7 @@
 #include <windows.h>
 #else
 #include <sys/resource.h>
+#include <sys/sysctl.h>
 #endif
 #include <getopt.h>
 #include <jansson.h>
@@ -126,35 +127,33 @@ static struct option_help options_help[] = {
 	  "(-h) Display this help text" },
 
 	{ "config FILE",
-	  "(-c FILE) JSON-format configuration file (default: none)\n"
-	  "See example-cfg.json for an example configuration." },
+	  "(-c FILE) Load a JSON-format configuration file" },
 
 	{ "algo XXX",
-	  "(-a XXX) Only scrypt (e.g. --algo scrypt) is supported" },
+	  "(-a XXX) Specify the algorithm to use (default: scrypt)" },
 
 	{ "quiet",
-	  "(-q) Disable per-thread hashmeter output (default: off)" },
+	  "(-q) Disable per-thread hashmeter output" },
 
 	{ "debug",
-	  "(-D) Enable debug output (default: off)" },
+	  "(-D) Enable debug output" },
 
 	{ "no-longpoll",
-	  "Disable X-Long-Polling support (default: enabled)" },
+	  "Disable X-Long-Polling support" },
 
 	{ "protocol-dump",
-	  "(-P) Verbose dump of protocol-level activities (default: off)" },
+	  "(-P) Verbose dump of protocol-level activities" },
 
 	{ "retries N",
 	  "(-r N) Number of times to retry if JSON-RPC call fails\n"
 	  "\t(default: retry indefinitely)" },
 
 	{ "retry-pause N",
-	  "(-R N) Number of seconds to pause between retries\n"
-	  "\t(default: 30)" },
+	  "(-R N) Number of seconds to pause between retries (default: 30)" },
 
 	{ "scantime N",
-	  "(-s N) Upper bound on time spent scanning current work,\n"
-	  "\tin seconds. (default: 5)" },
+	  "(-s N) Upper bound on time spent scanning current work, in seconds\n"
+	  "\t(default: 5)" },
 
 	{ "timeout N",
 	  "(-T N) Connection timeout, in seconds (default: 180)" },
@@ -168,11 +167,11 @@ static struct option_help options_help[] = {
 	  "(-t N) Number of miner threads (default: number of processors)" },
 
 	{ "url URL",
-	  "URL for JSON-RPC server "
+	  "(-o URL) URL for JSON-RPC server "
 	  "(default: " DEF_RPC_URL ")" },
 
 	{ "userpass USERNAME:PASSWORD",
-	  "Username:Password pair for JSON-RPC server" },
+	  "(-O USERNAME:PASSWORD) Username:Password pair for JSON-RPC server" },
 
 	{ "user USERNAME",
 	  "(-u USERNAME) Username for JSON-RPC server" },
@@ -198,9 +197,9 @@ static struct option options[] = {
 #ifdef HAVE_SYSLOG_H
 	{ "syslog", 0, NULL, 1004 },
 #endif
-	{ "url", 1, NULL, 1001 },
+	{ "url", 1, NULL, 'o' },
 	{ "user", 1, NULL, 'u' },
-	{ "userpass", 1, NULL, 1002 },
+	{ "userpass", 1, NULL, 'O' },
 
 	{ }
 };
@@ -784,7 +783,7 @@ static void parse_arg (int key, char *arg)
 		free(rpc_user);
 		rpc_user = strdup(arg);
 		break;
-	case 1001:			/* --url */
+	case 'o':			/* --url */
 		if (strncmp(arg, "http://", 7) &&
 		    strncmp(arg, "https://", 8))
 			show_usage();
@@ -792,7 +791,7 @@ static void parse_arg (int key, char *arg)
 		free(rpc_url);
 		rpc_url = strdup(arg);
 		break;
-	case 1002:			/* --userpass */
+	case 'O':			/* --userpass */
 		if (!strchr(arg, ':'))
 			show_usage();
 
@@ -813,9 +812,17 @@ static void parse_arg (int key, char *arg)
 	SYSTEM_INFO sysinfo;
 	GetSystemInfo(&sysinfo);
 	num_processors = sysinfo.dwNumberOfProcessors;
-#else
+#elif defined(_SC_NPROCESSORS_ONLN)
 	num_processors = sysconf(_SC_NPROCESSORS_ONLN);
+#elif defined(HW_NCPU)
+	int req[] = { CTL_HW, HW_NCPU };
+	size_t len = sizeof(num_processors);
+	v = sysctl(req, 2, &num_processors, &len, NULL, 0);
+#else
+	num_processors = 1;
 #endif
+	if (num_processors < 1)
+		num_processors = 1;
 	if (!opt_n_threads)
 		opt_n_threads = num_processors;
 }
@@ -857,7 +864,7 @@ static void parse_cmdline(int argc, char *argv[])
 	int key;
 
 	while (1) {
-		key = getopt_long(argc, argv, "a:c:qDPr:s:T:t:h?", options, NULL);
+		key = getopt_long(argc, argv, "hc:a:qDPr:s:T:t:o:O:u:p:", options, NULL);
 		if (key < 0)
 			break;
 

example-cfg.json

@@ -2,11 +2,11 @@
 	"_comment1" : "Any long-format command line argument ",
 	"_comment2" : "may be used in this JSON configuration file",
 
-	"url" : "http://127.0.0.1:8332",
+	"url" : "http://127.0.0.1:9332/",
 	"user" : "rpcuser",
 	"pass" : "rpcpass",
 
-	"algo" : "sse2_64",
+	"algo" : "scrypt",
 	"threads" : "4",
 
 	"quiet" : true

scrypt-x86.S

@@ -28,6 +28,41 @@
 
 #if defined(__i386__)
 	
+.macro scrypt_shuffle src, so, dest, do
+	movl	\so+60(\src), %eax
+	movl	\so+44(\src), %ebx
+	movl	\so+28(\src), %ecx
+	movl	\so+12(\src), %edx
+	movl	%eax, \do+12(\dest)
+	movl	%ebx, \do+28(\dest)
+	movl	%ecx, \do+44(\dest)
+	movl	%edx, \do+60(\dest)
+	movl	\so+40(\src), %eax
+	movl	\so+8(\src), %ebx
+	movl	\so+48(\src), %ecx
+	movl	\so+16(\src), %edx
+	movl	%eax, \do+8(\dest)
+	movl	%ebx, \do+40(\dest)
+	movl	%ecx, \do+16(\dest)
+	movl	%edx, \do+48(\dest)
+	movl	\so+20(\src), %eax
+	movl	\so+4(\src), %ebx
+	movl	\so+52(\src), %ecx
+	movl	\so+36(\src), %edx
+	movl	%eax, \do+4(\dest)
+	movl	%ebx, \do+20(\dest)
+	movl	%ecx, \do+36(\dest)
+	movl	%edx, \do+52(\dest)
+	movl	\so+0(\src), %eax
+	movl	\so+24(\src), %ebx
+	movl	\so+32(\src), %ecx
+	movl	\so+56(\src), %edx
+	movl	%eax, \do+0(\dest)
+	movl	%ebx, \do+24(\dest)
+	movl	%ecx, \do+32(\dest)
+	movl	%edx, \do+56(\dest)
+.endm
+
 .macro gen_salsa8_core_quadround
 	movl	52(%esp), %ecx
 	movl	4(%esp), %edx
@@ -648,73 +683,8 @@ xmm_scrypt_core:
 	subl	$128, %esp
 	andl	$-16, %esp
 	
-	# shuffle 1st block to (%esp)
-	movl	60(%edi), %edx
-	movl	44(%edi), %ecx
-	movl	28(%edi), %ebx
-	movl	12(%edi), %eax
-	movl	%edx, 12(%esp)
-	movl	%ecx, 28(%esp)
-	movl	%ebx, 44(%esp)
-	movl	%eax, 60(%esp)
-	movl	40(%edi), %ecx
-	movl	24(%edi), %ebx
-	movl	8(%edi), %eax
-	movl	56(%edi), %edx
-	movl	%ecx, 8(%esp)
-	movl	%ebx, 24(%esp)
-	movl	%eax, 40(%esp)
-	movl	%edx, 56(%esp)
-	movl	20(%edi), %ebx
-	movl	4(%edi), %eax
-	movl	52(%edi), %edx
-	movl	36(%edi), %ecx
-	movl	%ebx, 4(%esp)
-	movl	%eax, 20(%esp)
-	movl	%edx, 36(%esp)
-	movl	%ecx, 52(%esp)
-	movl	0(%edi), %eax
-	movl	48(%edi), %edx
-	movl	32(%edi), %ecx
-	movl	16(%edi), %ebx
-	movl	%eax, 0(%esp)
-	movl	%edx, 16(%esp)
-	movl	%ecx, 32(%esp)
-	movl	%ebx, 48(%esp)
-	
-	# shuffle 2nd block to 64(%esp)
-	movl	124(%edi), %edx
-	movl	108(%edi), %ecx
-	movl	92(%edi), %ebx
-	movl	76(%edi), %eax
-	movl	%edx, 76(%esp)
-	movl	%ecx, 92(%esp)
-	movl	%ebx, 108(%esp)
-	movl	%eax, 124(%esp)
-	movl	104(%edi), %ecx
-	movl	88(%edi), %ebx
-	movl	72(%edi), %eax
-	movl	120(%edi), %edx
-	movl	%ecx, 72(%esp)
-	movl	%ebx, 88(%esp)
-	movl	%eax, 104(%esp)
-	movl	%edx, 120(%esp)
-	movl	84(%edi), %ebx
-	movl	68(%edi), %eax
-	movl	116(%edi), %edx
-	movl	100(%edi), %ecx
-	movl	%ebx, 68(%esp)
-	movl	%eax, 84(%esp)
-	movl	%edx, 100(%esp)
-	movl	%ecx, 116(%esp)
-	movl	64(%edi), %eax
-	movl	112(%edi), %edx
-	movl	96(%edi), %ecx
-	movl	80(%edi), %ebx
-	movl	%eax, 64(%esp)
-	movl	%edx, 80(%esp)
-	movl	%ecx, 96(%esp)
-	movl	%ebx, 112(%esp)
+	scrypt_shuffle %edi, 0, %esp, 0
+	scrypt_shuffle %edi, 64, %esp, 64
 	
 	movdqa	96(%esp), %xmm6
 	movdqa	112(%esp), %xmm7
@@ -834,73 +804,8 @@ xmm_scrypt_core_loop2:
 	movdqa	%xmm6, 96(%esp)
 	movdqa	%xmm7, 112(%esp)
 	
-	# re-shuffle 1st block back
-	movl	60(%esp), %edx
-	movl	44(%esp), %ecx
-	movl	28(%esp), %ebx
-	movl	12(%esp), %eax
-	movl	%edx, 12(%edi)
-	movl	%ecx, 28(%edi)
-	movl	%ebx, 44(%edi)
-	movl	%eax, 60(%edi)
-	movl	40(%esp), %ecx
-	movl	24(%esp), %ebx
-	movl	8(%esp), %eax
-	movl	56(%esp), %edx
-	movl	%ecx, 8(%edi)
-	movl	%ebx, 24(%edi)
-	movl	%eax, 40(%edi)
-	movl	%edx, 56(%edi)
-	movl	20(%esp), %ebx
-	movl	4(%esp), %eax
-	movl	52(%esp), %edx
-	movl	36(%esp), %ecx
-	movl	%ebx, 4(%edi)
-	movl	%eax, 20(%edi)
-	movl	%edx, 36(%edi)
-	movl	%ecx, 52(%edi)
-	movl	0(%esp), %eax
-	movl	48(%esp), %edx
-	movl	32(%esp), %ecx
-	movl	16(%esp), %ebx
-	movl	%eax, 0(%edi)
-	movl	%edx, 16(%edi)
-	movl	%ecx, 32(%edi)
-	movl	%ebx, 48(%edi)
-	
-	# re-shuffle 2nd block back
-	movl	124(%esp), %edx
-	movl	108(%esp), %ecx
-	movl	92(%esp), %ebx
-	movl	76(%esp), %eax
-	movl	%edx, 76(%edi)
-	movl	%ecx, 92(%edi)
-	movl	%ebx, 108(%edi)
-	movl	%eax, 124(%edi)
-	movl	104(%esp), %ecx
-	movl	88(%esp), %ebx
-	movl	72(%esp), %eax
-	movl	120(%esp), %edx
-	movl	%ecx, 72(%edi)
-	movl	%ebx, 88(%edi)
-	movl	%eax, 104(%edi)
-	movl	%edx, 120(%edi)
-	movl	84(%esp), %ebx
-	movl	68(%esp), %eax
-	movl	116(%esp), %edx
-	movl	100(%esp), %ecx
-	movl	%ebx, 68(%edi)
-	movl	%eax, 84(%edi)
-	movl	%edx, 100(%edi)
-	movl	%ecx, 116(%edi)
-	movl	64(%esp), %eax
-	movl	112(%esp), %edx
-	movl	96(%esp), %ecx
-	movl	80(%esp), %ebx
-	movl	%eax, 64(%edi)
-	movl	%edx, 80(%edi)
-	movl	%ecx, 96(%edi)
-	movl	%ebx, 112(%edi)
+	scrypt_shuffle %esp, 0, %edi, 0
+	scrypt_shuffle %esp, 64, %edi, 64
 	
 	movl	%ebp, %esp
 	popl	%esi

scrypt.c

@@ -497,6 +497,19 @@ static void scrypt_1024_1_1_256_sp_3way(const uint32_t *input1, const uint32_t *
 
 #endif
 
+static int test_hash(const uint32_t *hash, const uint32_t *target)
+{
+	int i;
+	for (i = 7; i >= 0; i--) {
+		uint32_t t = le32dec(&target[i]);
+		if (hash[i] > t)
+			return 0;
+		if (hash[i] < t)
+			return 1;
+	}
+	return 1;
+}
+
 int scanhash_scrypt(int thr_id, unsigned char *pdata, unsigned char *scratchbuf,
 	const unsigned char *ptarget,
 	uint32_t max_nonce, unsigned long *hashes_done)
@@ -529,7 +542,7 @@ int scanhash_scrypt(int thr_id, unsigned char *pdata, unsigned char *scratchbuf,
 			if (throughput >= 3 && n < max_nonce) {
 				data3[19] = n++;
 				scrypt_1024_1_1_256_sp_3way(data, data2, data3, hash, hash2, hash3, scratchbuf);
-				if (hash3[7] <= Htarg) {
+				if (hash3[7] < Htarg || hash3[7] == Htarg && test_hash(hash3, (uint32_t *)ptarget)) {
 					be32enc(&((uint32_t *)pdata)[19], data3[19]);
 					*hashes_done = n;
 					return true;
@@ -537,7 +550,7 @@ int scanhash_scrypt(int thr_id, unsigned char *pdata, unsigned char *scratchbuf,
 			} else {
 				scrypt_1024_1_1_256_sp_2way(data, data2, hash, hash2, scratchbuf);
 			}
-			if (hash2[7] <= Htarg) {
+			if (hash2[7] < Htarg || hash2[7] == Htarg && test_hash(hash2, (uint32_t *)ptarget)) {
 				be32enc(&((uint32_t *)pdata)[19], data2[19]);
 				*hashes_done = n;
 				return true;
@@ -549,7 +562,7 @@ int scanhash_scrypt(int thr_id, unsigned char *pdata, unsigned char *scratchbuf,
 		scrypt_1024_1_1_256_sp(data, hash, scratchbuf);
 #endif
 
-		if (hash[7] <= Htarg) {
+		if (hash[7] < Htarg || hash[7] == Htarg && test_hash(hash, (uint32_t *)ptarget)) {
 			be32enc(&((uint32_t *)pdata)[19], data[19]);
 			*hashes_done = n;
 			return true;