prefer linear solvers such as MUMPS over SPRAL (#677)

- not clear yet how stable Spral actually is
coin-or · Jun 7, 2023 · 0e79b2f · 0e79b2f
1 parent 02ce615
commit 0e79b2f
Show file tree

Hide file tree

Showing 2 changed files with 8 additions and 4 deletions.
diff --git a/ChangeLog.md b/ChangeLog.md
@@ -7,6 +7,10 @@ More detailed information about incremental changes can be found in the
 
 ## 3.14
 
+### 3.14.13 (2023-xx-yy)
+
+- Reduced priority for making Spral the default value for option linear_solver [#677].
+
 ### 3.14.12 (2023-04-05)
 
 - Fix that a source file was installed and install more header files.

diff --git a/src/Algorithm/IpAlgBuilder.cpp b/src/Algorithm/IpAlgBuilder.cpp
@@ -225,10 +225,6 @@ void AlgorithmBuilder::RegisterOptions(
    {
       defaultsolver = "pardiso";
    }
-   else if( availablesolverslinked & IPOPTLINEARSOLVER_SPRAL )
-   {
-      defaultsolver = "spral";
-   }
    else if( availablesolverslinked & IPOPTLINEARSOLVER_WSMP )
    {
       defaultsolver = "wsmp";
@@ -241,6 +237,10 @@ void AlgorithmBuilder::RegisterOptions(
    {
       defaultsolver = "pardisomkl";
    }
+   else if( availablesolverslinked & IPOPTLINEARSOLVER_SPRAL )
+   {
+      defaultsolver = "spral";
+   }
    else if( availablesolverslinked & IPOPTLINEARSOLVER_MA77 )
    {
       defaultsolver = "ma77";