User:Le Forgeron/vault/Compilation - Revision history

Le Forgeron: /* ubuntu 13.10 */

2013-10-22T19:24:03Z

ubuntu 13.10

2013-10-22T19:16:56Z

clang (LLVM)

2013-10-22T18:52:42Z

gcc (Gnu)

2013-10-22T18:51:58Z

icc (Intel)

2013-10-22T18:51:46Z

icc (Intel)

2013-10-22T18:51:03Z

gcc (Gnu)

2013-10-22T18:47:41Z

ubuntu 13.10

2013-09-22T13:03:38Z

2013-09-22T13:01:14Z

Which one to choose

2013-09-22T12:56:25Z

@@ Line 34: / Line 34: @@
 # ./configure COMPILED_BY="Jérôme Grimbert <jgrimbert@free.fr>" --disable-io-restrictions CXX=clang++ CC=clang
 === ubuntu 13.10 ===
 ====Fix to be able to find stddef.h (and other include files)====
@@ Line 41: / Line 43: @@
 ==== configuration ====
 # ./configure COMPILED_BY="Jérôme Grimbert <jgrimbert@free.fr>" --disable-io-restrictions LIBS="-lboost_system -lboost_thread" CXX=clang++ CC=clang
 === same result ===

@@ Line 31: / Line 31: @@
 == clang (LLVM) ==
 * version 3.2-1
-# ./configure COMPILED_BY="Jérôme Grimbert <jgrimbert@free.fr>" --disable-io-restrictions CXX=clang++ CC=clang
+====Fix to be able to find stddef.h (and other include files)====
     I/O restrictions:          disabled
@@ Line 45: / Line 54: @@
     Compiler version:    clang++ 4.2.1
     Compiler flags:      -pipe -Wno-multichar -Wno-write-strings -O3 -ffast-math -march=native -pthread
 == icc (Intel) ==

@@ Line 9: / Line 9: @@
 == gcc (Gnu) ==
-=== version 4.7.3 ===
+=== Ubuntu 13.04, g++ version 4.7.3 ===
 # ./configure COMPILED_BY="Jérôme Grimbert <jgrimbert@free.fr>" --disable-io-restrictions
-=== version 4.8.1 ===
+=== Ubuntu 13.10, g++ version 4.8.1 ===
 # ./configure COMPILED_BY="Jérôme Grimbert <jgrimbert@free.fr>" --disable-io-restrictions LIBS="-lboost_system -lboost_thread"
-=== result ===
+=== same result ===
     I/O restrictions:          disabled

← Older revision		Revision as of 18:51, 22 October 2013
Line 52:		Line 52:

	# ./configure COMPILED_BY="Jérôme Grimbert <jgrimbert@free.fr>" --disable-io-restrictions CXX=icpc CC=icc CPPFLAGS=-I/usr/include/x86_64-linux-gnu/c++/4.7		# ./configure COMPILED_BY="Jérôme Grimbert <jgrimbert@free.fr>" --disable-io-restrictions CXX=icpc CC=icc CPPFLAGS=-I/usr/include/x86_64-linux-gnu/c++/4.7
−
	# ./configure COMPILED_BY="Jérôme Grimbert <jgrimbert@free.fr>" --disable-io-restrictions LIBS="-lboost_system -lboost_thread" CXX=icpc CC=icc CPPFLAGS=-I/usr/include/x86_64-linux-gnu/c++/4.8		# ./configure COMPILED_BY="Jérôme Grimbert <jgrimbert@free.fr>" --disable-io-restrictions LIBS="-lboost_system -lboost_thread" CXX=icpc CC=icc CPPFLAGS=-I/usr/include/x86_64-linux-gnu/c++/4.8

@@ Line 52: / Line 52: @@
 # ./configure COMPILED_BY="Jérôme Grimbert <jgrimbert@free.fr>" --disable-io-restrictions CXX=icpc CC=icc CPPFLAGS=-I/usr/include/x86_64-linux-gnu/c++/4.7
@@ Line 65: / Line 67: @@
     Compiler version:    icpc 13.0.1
     Compiler flags:      -pipe -Wno-multichar -Wno-write-strings -s -O3 -ip -xHost -pthread
 == Which one to choose ==

@@ Line 2: / Line 2: @@
 My preference is to not be bothered with io-restrictions, but your mileage may vary.
 == gcc (Gnu) ==
@@ Line 19: / Line 23: @@
     Compiler version:    g++ 4.7
     Compiler flags:      -pipe -Wno-multichar -Wno-write-strings -fno-enforce-eh-specs -s -O3 -ffast-math -march=native -pthread
 == clang (LLVM) ==

← Older revision		Revision as of 13:03, 22 September 2013
Line 1:		Line 1:
−	Tested on Ubuntu 13.04, 64 bits system (x86_64)	+	Tested on Ubuntu 13.04, 64 bits system (x86_64), with boost 1.49.

	My preference is to not be bothered with io-restrictions, but your mileage may vary.		My preference is to not be bothered with io-restrictions, but your mileage may vary.

@@ Line 64: / Line 64: @@
 Remember that your mileage might vary.
 Personal conclusions:
@@ Line 71: / Line 73: @@
 # an HT core is worth only 0.2 to 0.25 a real core.
-X-axis: number of thread (-WT option of povray)
+* X-axis: number of thread (-WT option of povray)
-Y-axis: relative performance (the higher the better)
+* Y-axis: relative performance (the higher the better)
 [[File:LeForgeron_i7_980_povperf.png]]

← Older revision		Revision as of 12:56, 22 September 2013
Line 59:		Line 59:
	Compiler version: icpc 13.0.1		Compiler version: icpc 13.0.1
	Compiler flags: -pipe -Wno-multichar -Wno-write-strings -s -O3 -ip -xHost -pthread		Compiler flags: -pipe -Wno-multichar -Wno-write-strings -s -O3 -ip -xHost -pthread
		+
		+
		+	== Which one to choose ==
		+
		+	Remember that your mileage might vary.
		+
		+	Personal conclusions:
		+	# Icc is best.
		+	# Clang is better than Gcc as long as no HT core are available.
		+	# Gcc is better than Clang when HT cores are available.
		+	# an HT core is worth only 0.2 to 0.25 a real core.
		+
		+	X-axis: number of thread (-WT option of povray)
		+	Y-axis: relative performance (the higher the better)
		+
		+	[[File:LeForgeron_i7_980_povperf.png]]