Différences

Ci-dessous, les différences entre deux révisions de la page.

--- freefem [2011/07/13 04:50] – créée gerard
+++ freefem [2017/08/25 07:56] (Version actuelle) – modification externe 127.0.0.1
@@ Ligne 1: / Ligne 1: @@
 FreeFem++
+====== Installation ======
   * installé dans /local/apps/freefem++-3.13-2
+====== exemple ======
+<code>
+[henry@octopus ~]$ /local/apps/freefem++-3.13-2/bin/FreeFem++ /local/apps/src/freefem++-3.13-2/examples++-tutorial/LaplaceP1.edp
+ EXEC of the plot  : ffglut
+-- FreeFem++ v  3.130002 (date Mar 28 jui 2011 09:22:37 CEST)
+ Load: lg_fem lg_mesh lg_mesh3 eigenvalue
+:  mesh Th=square(10,10);
+:  fespace Vh(Th,P1);     // P1 FE space
+:  Vh uh,vh;              // unkown and test function.
+:  func f=1;                 //  right hand side function
+:  func g=0;                 //  boundary condition function
+:
+:  problem laplace(uh,vh,solver=GMRES,tgv=1e5) =                    //  definion of  the problem
+:     int2d(Th)( dx(uh)*dx(vh) + dy(uh)*dy(vh) ) //  bilinear form
+:   + int1d(Th,1)( uh*vh)
+:   - int1d(Th,1)( vh)
+:   - int2d(Th)( f*vh )                          //  linear form
+:   + on(2,3,4,uh=g) ;                      //  boundary condition form
+:
+:   laplace; // solve the problem plot(uh); // to see the result
+:   plot(uh,ps="LaplaceP1.eps",value=true);
+:  sizestack + 1024 =1896  ( 872 )
+  -- Square mesh : nb vertices  =121 ,  nb triangles = 200 ,  nb boundary edges 40
+GMRES converges: 27 1.116e-07 0.154071 7.24338e-07 < 1e-06
+  -- Solve :
+          min 1.62405e-12  max 0.361312
+times: compile 0s, execution 0s,  mpirank:0
+Err ReadOnePlot 1
+ CodeAlloc : nb ptr  2299,  size :305528 mpirank: 0
+Bien: On a fini Normalement
+</code>
+====== compilation ======
+<code>
+[devel1@octopus freefem++-3.13-2]$ pwd
+/local/apps/src/freefem++-3.13-2
+./configure --prefix=/local/apps/freefem++-3.13-2 --enable-m64 --with-x --enable-download | & tee CONFIG.LOG
+make | & tee MAKE.LOG
+make install | & tee INSTALL.LOG
+</code>
+====== Erreurs ======
+<code>
+g++ -shared -fPIC -g -m64 -fPIC -DNDEBUG -O3 -mmmx -msse -msse2 -DDRAWING -DBAMG_LONG_LONG -DNCHECKPTR -fPIC 'fflapack.o' -o fflapack.so -llapack -lblas
+/usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/liblapack.a(dgeev.o): relocation R_X86_64_32 against `a local symbol' can not be used when making a shared object; recompile with -fPIC
+/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/liblapack.a: could not read symbols: Bad value
+collect2: ld returned 1 exit status
+</code>