GPU mixed krylov -- WIP

src/config/HYPRE_config.h.in

@@ -17,6 +17,9 @@
 /* Define to 1 if you have the <inttypes.h> header file. */
 #undef HAVE_INTTYPES_H
 
+/* Define to 1 if you have the <memory.h> header file. */
+#undef HAVE_MEMORY_H
+
 /* Define to 1 if using MLI */
 #undef HAVE_MLI
 
@@ -26,9 +29,6 @@
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
-/* Define to 1 if you have the <stdio.h> header file. */
-#undef HAVE_STDIO_H
-
 /* Define to 1 if you have the <stdlib.h> header file. */
 #undef HAVE_STDLIB_H
 
@@ -316,7 +316,5 @@
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
-/* Define to 1 if all of the C90 standard headers exist (not just the ones
-   required in a freestanding environment). This macro is provided for
-   backward compatibility; new code need not use it. */
+/* Define to 1 if you have the ANSI C header files. */
 #undef STDC_HEADERS

src/config/configure.in

@@ -347,10 +347,6 @@ AS_HELP_STRING([--enable-longdouble],
  esac],
 [hypre_using_longdouble=no]
 )
-if test "$hypre_using_longdouble" = "yes"
-then
-   AC_DEFINE(HYPRE_LONG_DOUBLE, 1, [Define to 1 if using quad precision values for HYPRE_Real])
-fi
 
 AC_ARG_ENABLE(complex,
 AS_HELP_STRING([--enable-complex],
@@ -2424,6 +2420,23 @@ AS_IF([ test x"$hypre_using_hip" == x"yes" ],
                          [AC_MSG_ERROR([unable to find ${HYPRE_ROCM_PREFIX}/include/hip/hip_common.h ... Ensure ROCm is installed and set ROCM_PATH environment variable to ROCm installation path.])] )],
                          [])
 
+dnl *********************************************************************
+dnl * Check for longdouble support
+dnl *********************************************************************
+
+if test "$hypre_using_longdouble" = "yes"
+then
+   if [test "x$hypre_using_cuda" = "xyes" || test "x$hypre_using_device_openmp" = "xyes" || test "x$hypre_using_hip" = "xyes" || test "x$hypre_using_sycl" = "xyes"]
+   then
+      AC_MSG_ERROR([******************** Incompatible precision on device **********************
+                  Long double data format is not supported on device.
+                  For GPU builds, please use the default double precision or --enable-single.
+                  ****************************************************************************])
+   else   
+      AC_DEFINE(HYPRE_LONG_DOUBLE, 1, [Define to 1 if using quad precision values for HYPRE_Real])
+   fi
+fi
+
 dnl *********************************************************************
 dnl * Set GPU warp size
 dnl *********************************************************************