diff --git a/var/spack/repos/builtin/packages/parmetis/package.py b/var/spack/repos/builtin/packages/parmetis/package.py
index 3f18dd76b87d349563ed3c4f53daf2db89036552..c691cf4191d1ad45f08f8f1be4ddb2831fe6df6f 100644
--- a/var/spack/repos/builtin/packages/parmetis/package.py
+++ b/var/spack/repos/builtin/packages/parmetis/package.py
@@ -46,6 +46,12 @@ class Parmetis(Package):
patch('enable_external_metis.patch')
depends_on('metis')
+ # bug fixes from PETSc developers
+ # https://bitbucket.org/petsc/pkg-parmetis/commits/1c1a9fd0f408dc4d42c57f5c3ee6ace411eb222b/raw/
+ patch('pkg-parmetis-1c1a9fd0f408dc4d42c57f5c3ee6ace411eb222b.patch')
+ # https://bitbucket.org/petsc/pkg-parmetis/commits/82409d68aa1d6cbc70740d0f35024aae17f7d5cb/raw/
+ patch('pkg-parmetis-82409d68aa1d6cbc70740d0f35024aae17f7d5cb.patch')
+
depends_on('gdb', when='+gdb')
def install(self, spec, prefix):
diff --git a/var/spack/repos/builtin/packages/parmetis/pkg-parmetis-1c1a9fd0f408dc4d42c57f5c3ee6ace411eb222b.patch b/var/spack/repos/builtin/packages/parmetis/pkg-parmetis-1c1a9fd0f408dc4d42c57f5c3ee6ace411eb222b.patch
new file mode 100644
index 0000000000000000000000000000000000000000..e6b8056c210ee81a4e1b53de95158fa00648ff34
--- /dev/null
+++ b/var/spack/repos/builtin/packages/parmetis/pkg-parmetis-1c1a9fd0f408dc4d42c57f5c3ee6ace411eb222b.patch
@@ -0,0 +1,77 @@
+From 1c1a9fd0f408dc4d42c57f5c3ee6ace411eb222b Mon Sep 17 00:00:00 2001
+From: Jed Brown <jed@59A2.org>
+Date: Fri, 12 Oct 2012 15:45:10 -0500
+Subject: [PATCH] ParMetis bug fixes reported by John Fettig [petsc-maint
+ #133631]
+
+'''
+I have also reported to to Karypis but have received zero
+response and he hasn't released any updates to the original release
+either. At least he approved my forum posting so that other people
+can see the bug and the fix.
+http://glaros.dtc.umn.edu/gkhome/node/837
+'''
+
+Hg-commit: 1c2b9fe39201d404b493885093b5992028b9b8d4
+---
+ libparmetis/xyzpart.c | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+diff --git a/libparmetis/xyzpart.c b/libparmetis/xyzpart.c
+index 3a2c289..63abfcb 100644
+--- a/libparmetis/xyzpart.c
++++ b/libparmetis/xyzpart.c
+@@ -104,7 +104,7 @@ void IRBinCoordinates(ctrl_t *ctrl, graph_t *graph, idx_t ndims, real_t *xyz,
+
+ for (i=0; i<nbins; i++)
+ emarkers[i] = gmin + (gmax-gmin)*i/nbins;
+- emarkers[nbins] = gmax*(1.0+2.0*REAL_EPSILON);
++ emarkers[nbins] = gmax*(1.0+copysign(1.0,gmax)*2.0*REAL_EPSILON);
+
+ /* get into a iterative backet boundary refinement */
+ for (l=0; l<5; l++) {
+@@ -152,7 +152,7 @@ void IRBinCoordinates(ctrl_t *ctrl, graph_t *graph, idx_t ndims, real_t *xyz,
+ }
+ }
+ nemarkers[0] = gmin;
+- nemarkers[nbins] = gmax*(1.0+2.0*REAL_EPSILON);
++ nemarkers[nbins] = gmax*(1.0+copysign(1.0,gmax)*2.0*REAL_EPSILON);
+ rcopy(nbins+1, nemarkers, emarkers);
+ }
+
+@@ -218,7 +218,7 @@ void RBBinCoordinates(ctrl_t *ctrl, graph_t *graph, idx_t ndims, real_t *xyz,
+
+ emarkers[0] = gmin;
+ emarkers[1] = gsum/gnvtxs;
+- emarkers[2] = gmax*(1.0+2.0*REAL_EPSILON);
++ emarkers[2] = gmax*(1.0+(gmax < 0 ? -1. : 1.)*2.0*REAL_EPSILON);
+ cnbins = 2;
+
+ /* get into a iterative backet boundary refinement */
+@@ -227,7 +227,7 @@ void RBBinCoordinates(ctrl_t *ctrl, graph_t *graph, idx_t ndims, real_t *xyz,
+ iset(cnbins, 0, lcounts);
+ rset(cnbins, 0, lsums);
+ for (j=0, i=0; i<nvtxs;) {
+- if (cand[i].key < emarkers[j+1]) {
++ if (cand[i].key <= emarkers[j+1]) {
+ lcounts[j]++;
+ lsums[j] += cand[i].key;
+ i++;
+@@ -272,12 +272,12 @@ void RBBinCoordinates(ctrl_t *ctrl, graph_t *graph, idx_t ndims, real_t *xyz,
+
+ rsorti(cnbins, nemarkers);
+ rcopy(cnbins, nemarkers, emarkers);
+- emarkers[cnbins] = gmax*(1.0+2.0*REAL_EPSILON);
++ emarkers[cnbins] = gmax*(1.0+(gmax < 0 ? -1. : 1.)*2.0*REAL_EPSILON);
+ }
+
+ /* assign the coordinate to the appropriate bin */
+ for (j=0, i=0; i<nvtxs;) {
+- if (cand[i].key < emarkers[j+1]) {
++ if (cand[i].key <= emarkers[j+1]) {
+ bxyz[cand[i].val*ndims+k] = j;
+ i++;
+ }
+--
+2.1.1.1.g1fb337f
+
diff --git a/var/spack/repos/builtin/packages/parmetis/pkg-parmetis-82409d68aa1d6cbc70740d0f35024aae17f7d5cb.patch b/var/spack/repos/builtin/packages/parmetis/pkg-parmetis-82409d68aa1d6cbc70740d0f35024aae17f7d5cb.patch
new file mode 100644
index 0000000000000000000000000000000000000000..9651d553478d23109b95ee31edd57183183094d8
--- /dev/null
+++ b/var/spack/repos/builtin/packages/parmetis/pkg-parmetis-82409d68aa1d6cbc70740d0f35024aae17f7d5cb.patch
@@ -0,0 +1,35 @@
+From 82409d68aa1d6cbc70740d0f35024aae17f7d5cb Mon Sep 17 00:00:00 2001
+From: Sean Farley <sean@mcs.anl.gov>
+Date: Tue, 20 Mar 2012 11:59:44 -0500
+Subject: [PATCH] parmetis: fix bug reported by jfettig; '<' to '<=' in xyzpart
+
+Hg-commit: 2dd2eae596acaabbc80e0ef875182616f868dbc2
+---
+ libparmetis/xyzpart.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/libparmetis/xyzpart.c b/libparmetis/xyzpart.c
+index 307aed9..3a2c289 100644
+--- a/libparmetis/xyzpart.c
++++ b/libparmetis/xyzpart.c
+@@ -111,7 +111,7 @@ void IRBinCoordinates(ctrl_t *ctrl, graph_t *graph, idx_t ndims, real_t *xyz,
+ /* determine bucket counts */
+ iset(nbins, 0, lcounts);
+ for (j=0, i=0; i<nvtxs;) {
+- if (cand[i].key < emarkers[j+1]) {
++ if (cand[i].key <= emarkers[j+1]) {
+ lcounts[j]++;
+ i++;
+ }
+@@ -158,7 +158,7 @@ void IRBinCoordinates(ctrl_t *ctrl, graph_t *graph, idx_t ndims, real_t *xyz,
+
+ /* assign the coordinate to the appropriate bin */
+ for (j=0, i=0; i<nvtxs;) {
+- if (cand[i].key < emarkers[j+1]) {
++ if (cand[i].key <= emarkers[j+1]) {
+ bxyz[cand[i].val*ndims+k] = j;
+ i++;
+ }
+--
+2.1.1.1.g1fb337f
+