FAQ.md

@@ -28,7 +28,7 @@
 * **I have build a model with integer investments/efficiencies. Backbone never invests or uses more than 100 units, although it would be cheaper.**
     * If the upper bound of your integer variable is infinity, CPLEX (the solver GAMS uses), sets it to 100 by default. To change this default setting, add intVarUp=0 in 1_options.gms under Solver options.
 * **I have a large model. After quite a time of solving, backbone tells me "solution time exceeded.".**
-    * There is a time limit for the solver, which is preset to 10000 s. You can heighten it by adding for example resLim=50000 to 1_options.gms under Solver options.
+    * There is a time limit for the solver, which is preset to 10000 s. You can heighten it by adding for example resLim=50000 to 1_options.gms under Solver options. Check the wiki page "Solvign algorithms" to find possibilities to accelerate your solution.
 * **Sometimes my results are not updated even though I have changed the input file and run backbone again.**
     * In the option files of VTT in 1_options.gms behind gdxxrw (this is the tool which converts xlsx into gdx) the parameter CheckDate is located. This ensures that the inputData.gdx is only rewritten if it is older than your input file. Sometimes there can be problems with the "last used" timestamps and inputData.gdx is not rewritten. You can either remove the inputData.gdx manually or remove the CheckDate parameter in 1_options.gms.
 * **I want to "force" a (thermal) unit to run for the whole time.**