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76d752585b
Grid/configure.ac
Peter Boyle 76d752585b Started a tidy up in the HMC sector. Now comfortable with the two level integrators; 
to a little figure out what Guido had done & why -- but there is a neat saving of force
evaluations across the nesting time boundary making use of linearity of the leapP in dt.

I cleaned up the printing, reduced the volume of code, in the process sharing printing
between all integrators. Placed an assert that the total integration time for all integrators
must match at end of trajectory.

Have now verified e-dH = 1 for nested integrators in Wilson/Wilson runs with both
Omelyan and with Leapfrog so substantial confidence gained.
2015-08-29 17:18:43 +01:00

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# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
#
# Project Grid package
#
# Time-stamp: <2015-07-10 17:46:21 neo>
AC_PREREQ([2.63])
AC_INIT([Grid], [1.0], [paboyle@ph.ed.ac.uk])
AC_CANONICAL_SYSTEM
AM_INIT_AUTOMAKE(subdir-objects)
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_SRCDIR([lib/Grid.h])
AC_CONFIG_HEADERS([lib/Config.h])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
AC_MSG_NOTICE([
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
Configuring $PACKAGE v$VERSION for $host
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
])
# Checks for programs.
AC_LANG(C++)
AC_PROG_CXX
AC_OPENMP
AC_PROG_RANLIB
#AX_CXX_COMPILE_STDCXX_11(noext, mandatory)
AX_EXT
# Checks for libraries.
#AX_GCC_VAR_ATTRIBUTE(aligned)
# Checks for header files.
AC_CHECK_HEADERS(stdint.h)
AC_CHECK_HEADERS(mm_malloc.h)
AC_CHECK_HEADERS(malloc/malloc.h)
AC_CHECK_HEADERS(malloc.h)
AC_CHECK_HEADERS(endian.h)
AC_CHECK_HEADERS(gmp.h)
AC_CHECK_DECLS([ntohll],[], [], [[#include <arpa/inet.h>]])
AC_CHECK_DECLS([be64toh],[], [], [[#include <arpa/inet.h>]])
# Checks for typedefs, structures, and compiler characteristics.
AC_TYPE_SIZE_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
# Checks for library functions.
echo
echo Checking libraries
echo :::::::::::::::::::::::::::::::::::::::::::
AC_CHECK_FUNCS([gettimeofday])
AC_CHECK_LIB([gmp],[__gmpf_init],,
[AC_MSG_ERROR(GNU Multiple Precision GMP library was not found in your system.
Please install or provide the correct path to your installation
Info at: http://www.gmplib.org)])
AC_CHECK_LIB([mpfr],[mpfr_init],,
[AC_MSG_ERROR(GNU Multiple Precision MPFR library was not found in your system.
Please install or provide the correct path to your installation
Info at: http://www.mpfr.org/)])
AC_ARG_ENABLE([simd],[AC_HELP_STRING([--enable-simd=SSE4|AVX|AVX2|AVX512|MIC],\
[Select instructions to be SSE4.0, AVX 1.0, AVX 2.0+FMA, AVX 512, MIC])],\
[ac_SIMD=${enable_simd}],[ac_SIMD=AVX2])
supported=no
case ${ac_SIMD} in
SSE4)
echo Configuring for SSE4
AC_DEFINE([SSE4],[1],[SSE4 Intrinsics] )
if test x"$ax_cv_support_ssse3_ext" = x"yes"; then dnl minimal support for SSE4
supported=yes
else
AC_MSG_WARN([Your processor does not support SSE4 instructions])
fi
;;
AVX)
echo Configuring for AVX
AC_DEFINE([AVX1],[1],[AVX Intrinsics] )
if test x"$ax_cv_support_avx_ext" = x"yes"; then dnl minimal support for AVX
supported=yes
else
AC_MSG_WARN([Your processor does not support AVX instructions])
fi
;;
AVX2)
echo Configuring for AVX2
AC_DEFINE([AVX2],[1],[AVX2 Intrinsics] )
if test x"$ax_cv_support_avx2_ext" = x"yes"; then dnl minimal support for AVX2
supported=yes
else
AC_MSG_WARN([Your processor does not support AVX2 instructions])
fi
;;
AVX512|MIC)
echo Configuring for AVX512 and MIC
AC_DEFINE([AVX512],[1],[AVX512 Intrinsics for Knights Corner] )
supported="cross compilation"
;;
NEONv8)
echo Configuring for experimental ARMv8a support
AC_DEFINE([NEONv8],[1],[NEON ARMv8 Experimental support ] )
supported="cross compilation"
;;
DEBUG)
echo Configuring without SIMD support - only for compiler DEBUGGING!
AC_DEFINE([EMPTY_SIMD],[1],[EMPTY_SIMD only for DEBUGGING] )
;;
*)
AC_MSG_ERROR([${ac_SIMD} flag unsupported as --enable-simd option\nRun ./configure --help for the list of options]);
;;
esac
AC_ARG_ENABLE([precision],[AC_HELP_STRING([--enable-precision=single|double],[Select default word size of Real])],[ac_PRECISION=${enable_precision}],[ac_PRECISION=double])
case ${ac_PRECISION} in
single)
echo default precision is single
AC_DEFINE([GRID_DEFAULT_PRECISION_SINGLE],[1],[GRID_DEFAULT_PRECISION is SINGLE] )
;;
double)
echo default precision is double
AC_DEFINE([GRID_DEFAULT_PRECISION_DOUBLE],[1],[GRID_DEFAULT_PRECISION is DOUBLE] )
;;
esac
AC_ARG_ENABLE([comms],[AC_HELP_STRING([--enable-comms=none|mpi],[Select communications])],[ac_COMMS=${enable_comms}],[ac_COMMS=none])
case ${ac_COMMS} in
none)
echo Configuring for NO communications
AC_DEFINE([GRID_COMMS_NONE],[1],[GRID_COMMS_NONE] )
;;
mpi)
echo Configuring for MPI communications
AC_DEFINE([GRID_COMMS_MPI],[1],[GRID_COMMS_MPI] )
;;
*)
AC_MSG_ERROR([${ac_COMMS} unsupported --enable-comms option]);
;;
esac
AM_CONDITIONAL(BUILD_COMMS_MPI,[ test "X${ac_COMMS}X" == "XmpiX" ])
AM_CONDITIONAL(BUILD_COMMS_NONE,[ test "X${ac_COMMS}X" == "XnoneX" ])
###################################################################
# Checks for doxygen support
# if present enables the "make doxyfile" command
#echo
#echo Checking doxygen support
#echo :::::::::::::::::::::::::::::::::::::::::::
#AC_PROG_DOXYGEN
#if test -n "$DOXYGEN"
#then
#AC_CONFIG_FILES([docs/doxy.cfg])
#fi
echo
echo Creating configuration files
echo :::::::::::::::::::::::::::::::::::::::::::
AC_CONFIG_FILES(Makefile)
AC_CONFIG_FILES(lib/Makefile)
AC_CONFIG_FILES(tests/Makefile)
AC_CONFIG_FILES(benchmarks/Makefile)
AC_OUTPUT
echo "
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Summary of configuration for $PACKAGE v$VERSION
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The following features are enabled:
- architecture (build) : $build_cpu
- os (build) : $build_os
- architecture (target) : $target_cpu
- os (target) : $target_os
- build DOXYGEN documentation : `if test "x$enable_doc" = xyes; then echo yes; else echo no; fi`
- graphs and diagrams : `if test "x$enable_dot" = xyes; then echo yes; else echo no; fi`
- Supported SIMD flags : $SIMD_FLAGS
----------------------------------------------------------
- enabled simd support : ${ac_SIMD} (supported: $supported )
- communications type : ${ac_COMMS}
"
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