diff --git a/src/graph/rome_models.cc b/src/graph/rome_models.cc
index 64ab60d22d..f0afd84f56 100644
--- a/src/graph/rome_models.cc
+++ b/src/graph/rome_models.cc
@@ -500,6 +500,19 @@ static struct rcclRomeModel rome_model_72 = {
   .options = "disableNumaMatching=1,tuning=2",
 };
 
+static struct rcclRomeModel rome_model_73 = {
+  .nGpus = 8, .nCpus = 4, .nNics = 0, .nLinks = 3,
+  .gpuIds = { 0xc1000, 0xc6000, 0xc9000, 0xce000, 0xd1000, 0xd6000, 0xd9000, 0xde000, },
+  .nicIds = { },
+  .gpuNuma = { 3, 3, 1, 1, 0, 0, 2, 2, },
+  .nicNuma = { },
+  .connMatrix = { 0, 4, 1, 0, 0, 0, 2, 0, 4, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 4, 2, 0, 0, 0, 0, 1, 4, 0, 0, 0, 0, 1, 0, 0, 2, 0, 0, 4, 1, 0, 0, 1, 0, 0, 4, 0, 0, 1, 2, 0, 0, 0, 1, 0, 0, 4, 0, 0, 0, 1, 0, 1, 4, 0, },
+  .gdrLevel = { },
+  .pattern = "20202020",
+  .ringBase = "0 1 3 2 4 5 7 6|6 7 5 4 2 3 1 0|0 1 5 4 6 7 3 2|2 3 7 6 4 5 1 0",
+  .options = "",
+};
+
 static struct rcclRomeModel romeTopoModels[] = {
   rome_model_22,
   rome_model_25,
@@ -536,6 +549,7 @@ static struct rcclRomeModel romeTopoModels[] = {
   rome_model_68,
   rome_model_71,
   rome_model_72,
+  rome_model_73,
 };
 
 /* Parse user defined rings. Format is like :
diff --git a/tools/scripts/topo_val.sh b/tools/scripts/topo_val.sh
index cd2ef834ec..6b48ecf548 100755
--- a/tools/scripts/topo_val.sh
+++ b/tools/scripts/topo_val.sh
@@ -21,7 +21,7 @@
 
 DIR="$(cd -P "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
-for i in {0..72}
+for i in {0..73}
 do
 	if [[ $i -eq 50 ]] || [[ $i -eq 51 ]]
 	then
diff --git a/tools/topo_expl/Makefile b/tools/topo_expl/Makefile
index 1edb7f0edf..9ca8fe4e8c 100644
--- a/tools/topo_expl/Makefile
+++ b/tools/topo_expl/Makefile
@@ -6,7 +6,7 @@ endif
 HIPCC = $(HIP_PATH)/bin/hipcc
 
 EXE = topo_expl
-CXXFLAGS = -g -O3 -Iinclude -I../../src -I../../src/include -I../../src/graph/ -I/opt/rocm/rocm_smi/include/ -DTOPO_EXPL -DENABLE_TRACE -lnuma
+CXXFLAGS = -g -O3 -Iinclude -I../../src -I../../src/include -I../../src/graph/ -I/opt/rocm/rocm_smi/include/ -DTOPO_EXPL -DENABLE_TRACE
 
 files = $(EXE).cpp model.cpp utils.cpp ../../src/graph/topo.cc ../../src/graph/rings.cc ../../src/graph/paths.cc ../../src/graph/trees.cc \
 	../../src/graph/search.cc ../../src/graph/connect.cc ../../src/graph/tuning.cc ../../src/graph/xml.cc ../../src/misc/nvmlwrap_stub.cc ../../src/graph/rome_models.cc
diff --git a/tools/topo_expl/models/topo_8p1h_2.xml b/tools/topo_expl/models/topo_8p1h_2.xml
new file mode 100644
index 0000000000..ef01230422
--- /dev/null
+++ b/tools/topo_expl/models/topo_8p1h_2.xml
@@ -0,0 +1,76 @@
+<system version="2">
+  <cpu numaid="3" affinity="ffff0000,00000000,ffff0000,00000000" arch="x86_64" vendor="AuthenticAMD" familyid="175" modelid="48">
+    <pci busid="0000:c1:00.0" class="0x038000" vendor="0x1002" device="0x7408" subsystem_vendor="0x1002" subsystem_device="0x0b0c" link_speed="16.0 GT/s PCIe" link_width="16">
+      <gpu dev="0" sm="90" gcn="910" arch="38911" rank="0" gdr="0">
+        <xgmi target="0000:c6:00.0" count="4" tclass="0x038000"/>
+        <xgmi target="0000:c9:00.0" count="1" tclass="0x038000"/>
+        <xgmi target="0000:d9:00.0" count="2" tclass="0x038000"/>
+      </gpu>
+    </pci>
+    <pci busid="0000:c6:00.0" class="0x038000" vendor="0x1002" device="0x7408" subsystem_vendor="0x1002" subsystem_device="0x0b0c" link_speed="16.0 GT/s PCIe" link_width="16">
+      <gpu dev="1" sm="90" gcn="910" arch="38911" rank="1" gdr="0">
+        <xgmi target="0000:c1:00.0" count="4" tclass="0x038000"/>
+        <xgmi target="0000:ce:00.0" count="1" tclass="0x038000"/>
+        <xgmi target="0000:d6:00.0" count="1" tclass="0x038000"/>
+      </gpu>
+    </pci>
+    <nic>
+      <net name="vethe2d5378" dev="1" speed="10000" port="0" guid="0x1" maxconn="65536" gdr="0"/>
+    </nic>
+  </cpu>
+  <cpu numaid="1" affinity="00000000,ffff0000,00000000,ffff0000" arch="x86_64" vendor="AuthenticAMD" familyid="175" modelid="48">
+    <pci busid="0000:c9:00.0" class="0x038000" vendor="0x1002" device="0x7408" subsystem_vendor="0x1002" subsystem_device="0x0b0c" link_speed="16.0 GT/s PCIe" link_width="16">
+      <gpu dev="2" sm="90" gcn="910" arch="38911" rank="2" gdr="0">
+        <xgmi target="0000:c1:00.0" count="1" tclass="0x038000"/>
+        <xgmi target="0000:ce:00.0" count="4" tclass="0x038000"/>
+        <xgmi target="0000:d1:00.0" count="2" tclass="0x038000"/>
+      </gpu>
+    </pci>
+    <pci busid="0000:ce:00.0" class="0x038000" vendor="0x1002" device="0x7408" subsystem_vendor="0x1002" subsystem_device="0x0b0c" link_speed="16.0 GT/s PCIe" link_width="16">
+      <gpu dev="3" sm="90" gcn="910" arch="38911" rank="3" gdr="0">
+        <xgmi target="0000:c6:00.0" count="1" tclass="0x038000"/>
+        <xgmi target="0000:c9:00.0" count="4" tclass="0x038000"/>
+        <xgmi target="0000:de:00.0" count="1" tclass="0x038000"/>
+      </gpu>
+    </pci>
+  </cpu>
+  <cpu numaid="0" affinity="00000000,0000ffff,00000000,0000ffff" arch="x86_64" vendor="AuthenticAMD" familyid="175" modelid="48">
+    <pci busid="0000:d1:00.0" class="0x038000" vendor="0x1002" device="0x7408" subsystem_vendor="0x1002" subsystem_device="0x0b0c" link_speed="16.0 GT/s PCIe" link_width="16">
+      <gpu dev="4" sm="90" gcn="910" arch="38911" rank="4" gdr="0">
+        <xgmi target="0000:c9:00.0" count="2" tclass="0x038000"/>
+        <xgmi target="0000:d6:00.0" count="4" tclass="0x038000"/>
+        <xgmi target="0000:d9:00.0" count="1" tclass="0x038000"/>
+      </gpu>
+    </pci>
+    <pci busid="0000:d6:00.0" class="0x038000" vendor="0x1002" device="0x7408" subsystem_vendor="0x1002" subsystem_device="0x0b0c" link_speed="16.0 GT/s PCIe" link_width="16">
+      <gpu dev="5" sm="90" gcn="910" arch="38911" rank="5" gdr="0">
+        <xgmi target="0000:c6:00.0" count="1" tclass="0x038000"/>
+        <xgmi target="0000:d1:00.0" count="4" tclass="0x038000"/>
+        <xgmi target="0000:de:00.0" count="1" tclass="0x038000"/>
+      </gpu>
+    </pci>
+    <pci busid="0000:91:00.0" class="0x060400" vendor="0x11f8" device="0x4028" subsystem_vendor="0x11f8" subsystem_device="0xbeef" link_speed="16.0 GT/s PCIe" link_width="4">
+      <pci busid="0000:94:00.0" class="0x020000" vendor="0x8086" device="0x1537" subsystem_vendor="0xffff" subsystem_device="0x0000" link_speed="2.5 GT/s PCIe" link_width="1">
+        <nic>
+          <net name="ens2" dev="0" speed="1000" port="0" guid="0x0" maxconn="65536" gdr="0"/>
+        </nic>
+      </pci>
+    </pci>
+  </cpu>
+  <cpu numaid="2" affinity="0000ffff,00000000,0000ffff,00000000" arch="x86_64" vendor="AuthenticAMD" familyid="175" modelid="48">
+    <pci busid="0000:d9:00.0" class="0x038000" vendor="0x1002" device="0x7408" subsystem_vendor="0x1002" subsystem_device="0x0b0c" link_speed="16.0 GT/s PCIe" link_width="16">
+      <gpu dev="6" sm="90" gcn="910" arch="38911" rank="6" gdr="0">
+        <xgmi target="0000:c1:00.0" count="2" tclass="0x038000"/>
+        <xgmi target="0000:d1:00.0" count="1" tclass="0x038000"/>
+        <xgmi target="0000:de:00.0" count="4" tclass="0x038000"/>
+      </gpu>
+    </pci>
+    <pci busid="0000:de:00.0" class="0x038000" vendor="0x1002" device="0x7408" subsystem_vendor="0x1002" subsystem_device="0x0b0c" link_speed="16.0 GT/s PCIe" link_width="16">
+      <gpu dev="7" sm="90" gcn="910" arch="38911" rank="7" gdr="0">
+        <xgmi target="0000:ce:00.0" count="1" tclass="0x038000"/>
+        <xgmi target="0000:d6:00.0" count="1" tclass="0x038000"/>
+        <xgmi target="0000:d9:00.0" count="4" tclass="0x038000"/>
+      </gpu>
+    </pci>
+  </cpu>
+</system>
diff --git a/tools/topo_expl/topo_expl.cpp b/tools/topo_expl/topo_expl.cpp
index e54f413985..ed0480a73a 100644
--- a/tools/topo_expl/topo_expl.cpp
+++ b/tools/topo_expl/topo_expl.cpp
@@ -142,6 +142,7 @@ NodeModelDesc model_descs[] = {
   {4, "topo_8p1h_n1.xml",       "4 nodes 8P1H"},
   {1, "topo_8p1h_1.xml",        "single node 8P1H Alt."},
   {4, "topo_8p1h_1.xml",        "4 nodes 8P1H Alt."},
+  {1, "topo_8p1h_2.xml",        "single node 8P1H Alt."},
 };
 
 int main(int argc,char* argv[])