From b6627f53bf459334446bb1e2c51728a764c8651d Mon Sep 17 00:00:00 2001 From: johannst Date: Fri, 14 Mar 2025 01:19:37 +0000 Subject: deploy: cb9e06f3a5bd9d42494e6abdaf61fb3fe19d4ea4 --- trace_profile/callgrind.html | 6 +- trace_profile/index.html | 7 +- trace_profile/ltrace.html | 6 +- trace_profile/oprofile.html | 6 +- trace_profile/perf.html | 6 +- trace_profile/perf/Makefile | 8 ++ trace_profile/perf/noploop.c | 10 ++ trace_profile/src/Makefile | 8 -- trace_profile/src/noploop.c | 10 -- trace_profile/strace.html | 6 +- trace_profile/time.html | 6 +- trace_profile/valgrind.html | 10 +- trace_profile/vtune.html | 262 +++++++++++++++++++++++++++++++++++++++++++ trace_profile/vtune/Makefile | 11 ++ trace_profile/vtune/main.c | 32 ++++++ 15 files changed, 350 insertions(+), 44 deletions(-) create mode 100644 trace_profile/perf/Makefile create mode 100644 trace_profile/perf/noploop.c delete mode 100644 trace_profile/src/Makefile delete mode 100644 trace_profile/src/noploop.c create mode 100644 trace_profile/vtune.html create mode 100644 trace_profile/vtune/Makefile create mode 100644 trace_profile/vtune/main.c (limited to 'trace_profile') diff --git a/trace_profile/callgrind.html b/trace_profile/callgrind.html index 8e27485..512c4c5 100644 --- a/trace_profile/callgrind.html +++ b/trace_profile/callgrind.html @@ -24,9 +24,9 @@ - - - + + + diff --git a/trace_profile/index.html b/trace_profile/index.html index da8562e..870d61b 100644 --- a/trace_profile/index.html +++ b/trace_profile/index.html @@ -24,9 +24,9 @@ - - - + + + @@ -164,6 +164,7 @@

+

diff --git a/trace_profile/ltrace.html b/trace_profile/ltrace.html index 16caa34..3b7137d 100644 --- a/trace_profile/ltrace.html +++ b/trace_profile/ltrace.html @@ -24,9 +24,9 @@ - - - + + + diff --git a/trace_profile/oprofile.html b/trace_profile/oprofile.html index 5b70f0e..fbc1ad7 100644 --- a/trace_profile/oprofile.html +++ b/trace_profile/oprofile.html @@ -24,9 +24,9 @@ - - - + + + diff --git a/trace_profile/perf.html b/trace_profile/perf.html index f0b8821..6938fe3 100644 --- a/trace_profile/perf.html +++ b/trace_profile/perf.html @@ -24,9 +24,9 @@ - - - + + + diff --git a/trace_profile/perf/Makefile b/trace_profile/perf/Makefile new file mode 100644 index 0000000..7e887b8 --- /dev/null +++ b/trace_profile/perf/Makefile @@ -0,0 +1,8 @@ +ipc: noploop + perf stat -e cycles,instructions -- ./noploop + +noploop: + $(CC) -o noploop noploop.c + +clean: + $(RM) noploop diff --git a/trace_profile/perf/noploop.c b/trace_profile/perf/noploop.c new file mode 100644 index 0000000..76e664f --- /dev/null +++ b/trace_profile/perf/noploop.c @@ -0,0 +1,10 @@ +#define NOP4 "nop\nnop\nnop\nnop\n" +#define NOP32 NOP4 NOP4 NOP4 NOP4 NOP4 NOP4 NOP4 NOP4 +#define NOP256 NOP32 NOP32 NOP32 NOP32 NOP32 NOP32 NOP32 NOP32 +#define NOP2048 NOP256 NOP256 NOP256 NOP256 NOP256 NOP256 NOP256 NOP256 + +int main() { + for (unsigned i = 0; i < 2000000; ++i) { + asm volatile(NOP2048); + } +} diff --git a/trace_profile/src/Makefile b/trace_profile/src/Makefile deleted file mode 100644 index 7e887b8..0000000 --- a/trace_profile/src/Makefile +++ /dev/null @@ -1,8 +0,0 @@ -ipc: noploop - perf stat -e cycles,instructions -- ./noploop - -noploop: - $(CC) -o noploop noploop.c - -clean: - $(RM) noploop diff --git a/trace_profile/src/noploop.c b/trace_profile/src/noploop.c deleted file mode 100644 index 76e664f..0000000 --- a/trace_profile/src/noploop.c +++ /dev/null @@ -1,10 +0,0 @@ -#define NOP4 "nop\nnop\nnop\nnop\n" -#define NOP32 NOP4 NOP4 NOP4 NOP4 NOP4 NOP4 NOP4 NOP4 -#define NOP256 NOP32 NOP32 NOP32 NOP32 NOP32 NOP32 NOP32 NOP32 -#define NOP2048 NOP256 NOP256 NOP256 NOP256 NOP256 NOP256 NOP256 NOP256 - -int main() { - for (unsigned i = 0; i < 2000000; ++i) { - asm volatile(NOP2048); - } -} diff --git a/trace_profile/strace.html b/trace_profile/strace.html index 9d57b68..f3bcb01 100644 --- a/trace_profile/strace.html +++ b/trace_profile/strace.html @@ -24,9 +24,9 @@ - - - + + + diff --git a/trace_profile/time.html b/trace_profile/time.html index dc6747c..0d5b6b7 100644 --- a/trace_profile/time.html +++ b/trace_profile/time.html @@ -24,9 +24,9 @@ - - - + + + diff --git a/trace_profile/valgrind.html b/trace_profile/valgrind.html index 1c15124..cfd0fbf 100644 --- a/trace_profile/valgrind.html +++ b/trace_profile/valgrind.html @@ -24,9 +24,9 @@ - - - + + + @@ -183,7 +183,7 @@ - + @@ -197,7 +197,7 @@ - + diff --git a/trace_profile/vtune.html b/trace_profile/vtune.html new file mode 100644 index 0000000..c02910d --- /dev/null +++ b/trace_profile/vtune.html @@ -0,0 +1,262 @@ + + + + + + vtune - Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +

+ + + + + + + + + + + + + +

+ +

+ +

+

+ + + + +

+ + + +

+ + + + + + + +

+

+ + + + + + +

+

+

vtune(1)

+

Vtune offers different analysis. Run vtune -collect help to list the +availale analysis.

+

Profiling

+

The following shows some common flows with the hotspot analsysis +as an example.

+

# Launch and profile process.
+vtune -collect hotspots [opts] -- target [args]
+
+# Attach and profile running process.
+vtune -collect hotspots [opts] -target-pid <pid>
+

+

Some common options are the following.

+

-r <dir>           output directory for the profile
+-no-follow-child   dont attach to to child processes (default is to follow)
+-start-paused      start with paused profiling
+

+

Analyze

+

vtune-gui <dir>
+

+

Programmatically control sampling

+

Vtune offers an API to resume and pause the profile collection from within +the profilee itself. This can be helpful if either only a certain phase should +be profiled or some phase should be skipped.

+

The following gives an example where only one phase in the program is profiled. +The program makes calls to the vtune API to resume and pause the collection, +while vtune is invoked with -start-paused to pause profiling initially.

+

#include <ittnotify.h>
+
+void init();
+void compute();
+void shutdown();
+
+int main() {
+  init();
+
+  __itt_resume();
+  compute();
+  __itt_pause();
+
+  shutdown();
+  return 0;
+}
+

+

The makefile gives an example how to build and profile the application.

+

VTUNE ?= /opt/intel/oneapi/vtune/latest
+
+main: main.c
+	gcc -o $@ $^ -I$(VTUNE)/include -L$(VTUNE)/lib64 -littnotify
+
+vtune: main
+	$(VTUNE)/bin64/vtune -collect hotspots -start-paused -- ./main
+

+ +

+ + +

+

+ + + +

+ + + + + + + + + + + + + + + + + + +

+ + diff --git a/trace_profile/vtune/Makefile b/trace_profile/vtune/Makefile new file mode 100644 index 0000000..694e453 --- /dev/null +++ b/trace_profile/vtune/Makefile @@ -0,0 +1,11 @@ +VTUNE ?= /opt/intel/oneapi/vtune/latest + +main: main.c + gcc -o $@ $^ -I$(VTUNE)/include -L$(VTUNE)/lib64 -littnotify + +vtune: main + $(VTUNE)/bin64/vtune -collect hotspots -start-paused -- ./main + +clean: + $(RM) main + $(RM) -r r*hs diff --git a/trace_profile/vtune/main.c b/trace_profile/vtune/main.c new file mode 100644 index 0000000..8c019d3 --- /dev/null +++ b/trace_profile/vtune/main.c @@ -0,0 +1,32 @@ +#include + +void init(); +void compute(); +void shutdown(); + +int main() { + init(); + + __itt_resume(); + compute(); + __itt_pause(); + + shutdown(); + return 0; +} + +// + +#include + +void init() { + sleep(1); +} + +void compute() { + sleep(1); +} + +void shutdown() { + sleep(1); +} -- cgit v1.2.3