5. Simulation using Xyce
5.1. XYCE installation on ubuntu 22.04 LTS
Xyce installation is demanding due to the specific version isssues and multiple dependencies. Apart the bulid requirements listed in the building guide the key parts for insallation are:
installation of trilinos
installation of ADMS
installation of Xyce
5.1.1. Trilinos installation
First of all one have to obtain the exact version of trilinos 12.12.1
cd
git clone https://github.com/trilinos/Trilinos.git Trilinos
cd Trilinos
git checkout trilinos-release-12-12-1
Since it is recommended to build trilinos out of the source code directory one can execute the following
cd
mkdir trilinos_build
cd trilinos_build
touch reconfigure.sh
chmod +x reconfigure.sh
The content of the file reconfigure.sh is listed below:
#!/bin/sh
SRCDIR="$HOME/Trilinos/"
ARCHDIR="/usr/local"
FLAGS="-O3 -fPIC"
cmake \
-DCMAKE_C_COMPILER=gcc \
-DCMAKE_CXX_COMPILER=g++ \
-DCMAKE_Fortran_COMPILER=gfortran \
-DCMAKE_CXX_FLAGS="$FLAGS" \
-DCMAKE_C_FLAGS="$FLAGS" \
-DCMAKE_Fortran_FLAGS="$FLAGS" \
-DCMAKE_INSTALL_PREFIX=$ARCHDIR \
-DCMAKE_MAKE_PROGRAM="make" \
-DTrilinos_ENABLE_NOX=ON \
-DNOX_ENABLE_LOCA=ON \
-DTrilinos_ENABLE_EpetraExt=ON \
-DEpetraExt_BUILD_BTF=ON \
-DEpetraExt_BUILD_EXPERIMENTAL=ON \
-DEpetraExt_BUILD_GRAPH_REORDERINGS=ON \
-DTrilinos_ENABLE_TrilinosCouplings=ON \
-DTrilinos_ENABLE_Ifpack=ON \
-DTrilinos_ENABLE_AztecOO=ON \
-DTrilinos_ENABLE_Belos=ON \
-DTrilinos_ENABLE_Teuchos=ON \
-DTrilinos_ENABLE_COMPLEX_DOUBLE=ON \
-DTrilinos_ENABLE_Amesos=ON \
-DAmesos_ENABLE_KLU=ON \
-DTrilinos_ENABLE_Amesos2=ON \
-DAmesos2_ENABLE_KLU2=ON \
-DAmesos2_ENABLE_Basker=ON \
-DTrilinos_ENABLE_Sacado=ON \
-DTrilinos_ENABLE_Stokhos=ON \
-DTrilinos_ENABLE_Kokkos=ON \
-DTrilinos_ENABLE_ALL_OPTIONAL_PACKAGES=OFF \
-DTrilinos_ENABLE_CXX11=ON \
-DTPL_ENABLE_AMD=ON \
-DAMD_LIBRARY_DIRS="/usr/lib" \
-DTPL_AMD_INCLUDE_DIRS="/usr/include/suitesparse" \
-DTPL_ENABLE_BLAS=ON \
-DTPL_ENABLE_LAPACK=ON \
$SRCDIR
The installation process consists of the following commands:
./reconfigure.sh
make
sudo make install
5.1.2. ADMS installation
After successfull installation one can procees installing ADMS. The installation process
is strightforward and well described on the ASMS github repository.
Use cmake based build
5.1.3. XYCE installation
The following steps of Xyce installation are similar to Trilinos
cd
git clone https://github.com/Xyce/Xyce.git
cd Xyce
git checkout Release-7-8-0
./bootstrap
cd
mkdir xyce_build
cd xyce_build
touch reconfigure.sh
chmod +x reconfigure.sh
The content of the file reconfigure.sh is listed below:
#!/bin/sh
$HOME/Xyce/configure \
CXXFLAGS="-O3 -fPIC" \
ARCHDIR="/usr/local" \
CPPFLAGS="-I/usr/include/suitesparse" \
--enable-stokhos \
--enable-amesos2 \
--enable-user-plugin \
--enable-admsmodels \
--enable-shared \
--enable-xyce-shareable
To finish the installation execute:
./reconfigure.sh
make
sudo make install
Ngspice is an open source simulator hosted at this page. The tool is well documented and the user manual can be found here. In order to install ngspice the recomended method is the following:
git clone https://git.code.sf.net/p/ngspice/ngspice ngspice-ngspice
cd ngspice-ngspice
./configure --enable-osdi
make
sudo make install
cd ..
rm -rf ngspice-ngspice
5.2. Xyce basic example
A basic spice level netlist, which simulates DC sweep resistors, is shown below:
**.subckt dc_res_temp
Vres Vcc GND 1.5
Vsil Vcc net1 0
Vppd Vcc net2 0
Vrh Vcc net3 0
XR1 GND net1 rsil w=0.5e-6 l=1.5e-6 m=1 b=0
XR2 GND net2 rppd w=0.5e-6 l=0.5e-6 m=1 b=0
XR3 GND net3 rhigh w=0.5e-6 l=0.5e-6 m=1 b=0
**** begin user architecture code
.include /home/your_user/your_path_to_pdk/IHP-Open-PDK/ihp-sg13g2/libs.tech/xyce/models/resistors.lib
.dc Vres 0 1.5 0.01
.PRINT dc format=raw file=dc_res_temp.raw I(Vsil) I(Vppd) I(Vrh)
**** end user architecture code
**.ends
.GLOBAL GND
.end
The netlist can be saved as dc_res_temp.spice and simulated calling the following command:
Xyce dc_res_temp.spice
The user should get the following output:
***** Solution Summary *****
Number Successful Steps Taken: 151
Number Failed Steps Attempted: 0
Number Jacobians Evaluated: 57543
Number Linear Solves: 57543
Number Failed Linear Solves: 0
Number Residual Evaluations: 58868
Number Nonlinear Convergence Failures: 0
Total Residual Load Time: 0.0881166 seconds
Total Jacobian Load Time: 0.04089 seconds
Total Linear Solution Time: 0.196041 seconds
***** Total Simulation Solvers Run Time: 1.46115 seconds
***** Total Elapsed Run Time: 1.46848 seconds
*****
***** End of Xyce(TM) Simulation
*****
Timing summary of 1 processor
Stats Count CPU Time Wall Time
---------------------------------------- ----- --------------------- ---------------------
Xyce 1 1.612 (100.0%) 1.471 (100.0%)
Analysis 1 1.548 (96.08%) 1.461 (99.33%)
DC Sweep 1 1.548 (96.08%) 1.461 (99.33%)
Solve 151 1.546 (95.91%) 1.460 (99.24%)
Residual 58868 0.167 (10.39%) 0.152 (10.33%)
Jacobian 57543 0.114 ( 7.08%) 0.099 ( 6.75%)
Linear Solve 57543 0.283 (17.57%) 0.258 (17.55%)
Successful Step 151 0.001 ( 0.05%) 0.001 ( 0.04%)
Netlist Import 1 0.017 ( 1.07%) 0.003 ( 0.21%)
Parse Context 1 0.009 ( 0.58%) 0.001 ( 0.06%)
Distribute Devices 1 0.000 ( 0.00%) 0.001 ( 0.07%)
Verify Devices 1 0.000 ( 0.00%) 0.000 (<0.01%)
Instantiate 1 0.000 ( 0.00%) 0.000 (<0.01%)
Late Initialization 1 0.012 ( 0.73%) 0.003 ( 0.20%)
Global Indices 1 0.000 ( 0.00%) 0.001 ( 0.08%)
Setup Matrix Structure 1 0.002 ( 0.13%) 0.000 ( 0.02%)
The netlist was generated using xschem configured to use Xyce as a simulator
