diff --git a/Solver/Makefile.in b/Solver/Makefile.in
index 03b41b930..efdb31cbf 100755
--- a/Solver/Makefile.in
+++ b/Solver/Makefile.in
@@ -34,12 +34,15 @@ EXTLIB_INC =
 ########################################
 # 3.- User defined compilation flags 
 ########################################
+GNU_HPC_FLAGS= -cpp -fallow-argument-mismatch -std=legacy -ffree-line-length-0 -O3 -ftree-vectorize \
+		   -ftree-vectorizer-verbose=0 -fbackslash -D_has_Quad -march=znver3 -funroll-loops
 GNU_RELEASE_FLAGS= -cpp -ffree-line-length-0 -O3 -ftree-vectorize  -ftree-vectorizer-verbose=0 \
 		   -fbackslash -D_has_Quad
 GNU_DEBUG_FLAGS=  -ffree-line-length-0 -cpp -O0 -g -fcheck=all -Wno-unused-variable \
 		  -fbacktrace -fbounds-check -finit-real=snan -Wall \
 		  -ffpe-trap=invalid,zero,overflow -fcheck-array-temporaries \
 		  -fbackslash -fcheck=pointer -D_has_Quad
+INTEL_HPC_FLAGS= -cpp -Ofast -msse4.2 -axAVX,CORE-AVX2 -assume bscc -D_has_Quad  -fp-model=fast=2 -ipo
 INTEL_RELEASE_FLAGS= -cpp -O3 -assume bscc -D_has_Quad -fp-model precise
 INTEL_DEBUG_FLAGS= -cpp -O0 -g -warn all -fpscomp logicals -traceback \
 		   -check bounds -check uninit -ftrapuv -debug all \
@@ -99,6 +102,13 @@ ifeq ($(MODE),RELEASE)
      else ifeq ($(FC),ifort)
          FFLAGS=$(INTEL_RELEASE_FLAGS)
      endif
+else ifeq ($(MODE),HPC)
+	 MACROS+= -D_HPC_MODE
+     ifeq ($(FC),gfortran)
+         FFLAGS=$(GNU_HPC_FLAGS)
+     else ifeq ($(FC),ifort)
+         FFLAGS=$(INTEL_HPC_FLAGS)
+     endif	 
 else ifeq ($(MODE),DEBUG)
      ifeq ($(FC),gfortran)
          FFLAGS=$(GNU_DEBUG_FLAGS)
diff --git a/Solver/src/libs/monitors/ResidualsMonitor.f90 b/Solver/src/libs/monitors/ResidualsMonitor.f90
index c2850f920..2f4e02035 100644
--- a/Solver/src/libs/monitors/ResidualsMonitor.f90
+++ b/Solver/src/libs/monitors/ResidualsMonitor.f90
@@ -194,6 +194,9 @@ subroutine Residuals_WriteToFile ( self , iter , t, TotalSimuTime, SolverSimuTim
          integer                    :: i
          integer                    :: fID
 
+#ifdef _HPC_MODE
+   return
+#endif          
          if ( MPI_Process % isRoot ) then
 !
 !           Open file
diff --git a/doc/UserManual.pdf b/doc/UserManual.pdf
index 66996e355..e3084c2ac 100644
Binary files a/doc/UserManual.pdf and b/doc/UserManual.pdf differ
diff --git a/doc/UserManual.tex b/doc/UserManual.tex
index cbdd35eb8..202bc2527 100644
--- a/doc/UserManual.tex
+++ b/doc/UserManual.tex
@@ -68,7 +68,7 @@ \chapter{Compiling the code} \label{sect:compiling}
 with the desired options (bold are default):
 
 \begin{itemize}
-\item MODE=DEBUG/\textbf{RELEASE}
+\item MODE=DEBUG/HPC/\textbf{RELEASE}
 \item COMPILER=ifort/\textbf{gfortran}
 \item COMM=PARALLEL/\textbf{SEQUENTIAL}
 \item ENABLE\_THREADS=NO/\textbf{YES}
@@ -80,6 +80,8 @@ \chapter{Compiling the code} \label{sect:compiling}
 	$ make all COMPILER=ifort COMM=PARALLEL
 \end{lstlisting}
 
+\item MODE=DEBUG/HPC/\textbf{RELEASE} flag enables various compiler flags for different levels of code optimization. Furthermore, MODE=HPC disables residual file writing to improve performance. 
+
 \item The ENABLE\_THREADS=YES flag enables shared memory simulations using OpenMP.
 
 \item The COM=PARALLEL flag enables distributed memory simulations using MPI.
@@ -1670,7 +1672,7 @@ \section{Compiling the Problem File}
 \end{lstlisting}
 where again the options are (bold are default):
 \begin{itemize}
-\item MODE=DEBUG/\textbf{RELEASE}
+\item MODE=DEBUG/HPC/\textbf{RELEASE}
 \item COMPILER=ifort/\textbf{gfortran}
 \item COMM=PARALLEL/\textbf{SEQUENTIAL}
 \item ENABLE\_THREADS=NO/\textbf{YES}
diff --git a/utils/ProblemFile/Makefile b/utils/ProblemFile/Makefile
index c8f03bd5e..ef7d4a5ad 100644
--- a/utils/ProblemFile/Makefile
+++ b/utils/ProblemFile/Makefile
@@ -39,17 +39,20 @@ MACROS =
 # 3.- User defined compilation flags 
 ########################################
 FFLAGS=-fPIC
+GNU_HPC_FLAGS= -cpp -fallow-argument-mismatch -std=legacy -ffree-line-length-0 -O3 -ftree-vectorize \
+		   -ftree-vectorizer-verbose=0 -fbackslash -D_has_Quad -march=znver3 -funroll-loops
 GNU_RELEASE_FLAGS= -cpp -ffree-line-length-0 -O3 -ftree-vectorize  -ftree-vectorizer-verbose=0 \
-                   -fbackslash
+		   -fbackslash -D_has_Quad
 GNU_DEBUG_FLAGS=  -ffree-line-length-0 -cpp -O0 -g -fcheck=all -Wno-unused-variable \
-                  -fbacktrace -fbounds-check -finit-real=snan -Wall \
-                  -ffpe-trap=invalid,zero,overflow -fcheck-array-temporaries \
-                  -fbackslash -fcheck=pointer
-INTEL_RELEASE_FLAGS= -cpp -O3 -assume bscc -fp-model precise
-INTEL_DEBUG_FLAGS= -cpp -O0 -g -warn all -fpscomp logicals -traceback -check all \
-                   -check bounds -check uninit -ftrapuv -debug all -warn interfaces \
-                   -ftrace=full -ftz -fp-model precise \
-                   -fp-speculation=off -assume bscc
+		  -fbacktrace -fbounds-check -finit-real=snan -Wall \
+		  -ffpe-trap=invalid,zero,overflow -fcheck-array-temporaries \
+		  -fbackslash -fcheck=pointer -D_has_Quad
+INTEL_HPC_FLAGS= -cpp -Ofast -msse4.2 -axAVX,CORE-AVX2 -assume bscc -D_has_Quad  -fp-model=fast=2 -ipo
+INTEL_RELEASE_FLAGS= -cpp -O3 -assume bscc -D_has_Quad -fp-model precise
+INTEL_DEBUG_FLAGS= -cpp -O0 -g -warn all -fpscomp logicals -traceback \
+		   -check bounds -check uninit -ftrapuv -debug all \
+		   -ftrace=full -ftz -fp-model precise \
+		   -fp-speculation=off -assume bscc -D_has_Quad
 ARFLAGS=crv
 
 TARGET=./libproblemfile
@@ -124,6 +127,13 @@ ifeq ($(MODE),RELEASE)
      else ifeq ($(FC),ifort)
          FFLAGS+=$(INTEL_RELEASE_FLAGS)
      endif
+else ifeq ($(MODE),HPC)
+	 MACROS+= -D_HPC_MODE
+     ifeq ($(FC),gfortran)
+         FFLAGS+=$(GNU_HPC_FLAGS)
+     else ifeq ($(FC),ifort)
+         FFLAGS+=$(INTEL_HPC_FLAGS)
+     endif	 
 else ifeq ($(MODE),DEBUG)
      ifeq ($(FC),gfortran)
          FFLAGS+=$(GNU_DEBUG_FLAGS)