PPPM in USER-INTEL does not support triclinic cells

doc/src/kspace_style.rst

@@ -429,8 +429,8 @@ interactions. Vacuum boundary conditions are not currently supported.
 
 The *ewald/disp*\ , *ewald*\ , *pppm*\ , and *msm* styles support
 non-orthogonal (triclinic symmetry) simulation boxes. However,
-triclinic simulation cells may not yet be supported by suffix versions
-of these styles.
+triclinic simulation cells may not yet be supported by all suffix
+versions of these styles.
 
 All of the kspace styles are part of the KSPACE package.  They are
 only enabled if LAMMPS was built with that package.  See the :doc:`Build package <Build_package>` doc page for more info.

src/USER-INTEL/pppm_disp_intel.cpp

@@ -62,6 +62,7 @@ enum{FORWARD_IK, FORWARD_AD, FORWARD_IK_PERATOM, FORWARD_AD_PERATOM,
 PPPMDispIntel::PPPMDispIntel(LAMMPS *lmp) : PPPMDisp(lmp)
 {
   suffix_flag |= Suffix::INTEL;
+  triclinic_support = 0;
 
   order = 7;
   order_6 = 7; //sets default stencil sizes to 7

src/USER-INTEL/pppm_intel.cpp

@@ -60,6 +60,7 @@ enum{FORWARD_IK,FORWARD_AD,FORWARD_IK_PERATOM,FORWARD_AD_PERATOM};
 PPPMIntel::PPPMIntel(LAMMPS *lmp) : PPPM(lmp)
 {
   suffix_flag |= Suffix::INTEL;
+  triclinic_support = 0;
 
   order = 7; //sets default stencil size to 7