# Can't choose my scenario **URL:** \ **Category:** Gatling (Open-Source)\ **Created:** [January 29, 2015, 2:00pm UTC](https://community.gatling.io/t/cant-choose-my-scenario/1948 "2015-01-29T14:00:19Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![arnaud\_ferrand](https://avatars.discourse-cdn.com/v4/letter/a/dbc845/32.png) [@arnaud\_ferrand](https://community.gatling.io/u/arnaud_ferrand)\ **Post date:** [January 29, 2015, 2:00pm UTC](https://community.gatling.io/t/cant-choose-my-scenario/1948/1 "2015-01-29T14:00:19Z")
Hi all, I am discovering Gatling. yesterday I did as usually some load test with the old 1.5.6 version. I had rouble with long post strings. On a diffrent laptop I try the last version 2.1.4. I migrate the scala code (thanks the migration documents !) Running gatling I had some compilation issues; fix the code and run again gatling.bat I don’t have any issue, but the simulation is not there. never mind. I save my simluation. and record a fake one with the same name and package. I see it running gatling.bat. I revert my code. No compilation error, and it disappears ☹ any idea of what I am missing in the documention when creating a simulation on a machine and moving it to other ? thanks for your help Arnaud ---
**Author:** ![arnaud\_ferrand](https://avatars.discourse-cdn.com/v4/letter/a/dbc845/32.png) [@arnaud\_ferrand](https://community.gatling.io/u/arnaud_ferrand)\ **Post date:** [January 29, 2015, 3:13pm UTC](https://community.gatling.io/t/cant-choose-my-scenario/1948/2 "2015-01-29T15:13:46Z")
there is no class file in target\test-classes folder. ---
**Author:** ![slandelle](https://dub1.discourse-cdn.com/flex013/user_avatar/community.gatling.io/slandelle/32/4_2.png) [@slandelle](https://community.gatling.io/u/slandelle)\ **Post date:** [January 29, 2015, 3:31pm UTC](https://community.gatling.io/t/cant-choose-my-scenario/1948/3 "2015-01-29T15:31:51Z")
No write permission on filesystem, maybe? Sorry, crystal ball broken. ---
**Author:** ![arnaud\_ferrand](https://avatars.discourse-cdn.com/v4/letter/a/dbc845/32.png) [@arnaud\_ferrand](https://community.gatling.io/u/arnaud_ferrand)\ **Post date:** [January 29, 2015, 4:23pm UTC](https://community.gatling.io/t/cant-choose-my-scenario/1948/4 "2015-01-29T16:23:48Z")
thanks for you answer. good hint for my client laptop. but on mine on my new gatling has evryone : full control. I activate DEBUG on logbackxml.conf. I saw a message talking about 4 source files Initial source changes: removed:Set() added: Set(C:\bin\gatling-charts-highcharts-bundle-2.1.4\user-files\simulations\orange\ScenarioFibre.scala, C:\bin\gatling-charts-highcharts-bundle-2.1.4\user-files\simulations\orange\Scenario1.scala) modified: Set(C:\bin\gatling-charts-highcharts-bundle-2.1.4\user-files\simulations\orange\ScenarioCaraibes.scala, C:\bin\gatling-charts-highcharts-bundle-2.1.4\user-files\simulations\esrifrance\Geoprocessing.scala) Removed products: Set(C:\bin\gatling-charts-highcharts-bundle-2.1.4\target\test-classes\orange\ScenarioCaraibes.class, C:\bin\gatling-charts-highcharts-bundle-2.1.4\target\test-classes\esrifrance\Geoprocessing.class) External API changes: API Changes: Set() Modified binary dependencies: Set() Initial directly invalidated sources: Set(C:\bin\gatling-charts-highcharts-bundle-2.1.4\user-files\simulations\orange\ScenarioCaraibes.scala, C:\bin\gatling-charts-highcharts-bundle-2.1.4\user-files\simulations\orange\ScenarioFibre.scala, C:\bin\gatling-charts-highcharts-bundle-2.1.4\user-files\simulations\esrifrance\Geoprocessing.scala, C:\bin\gatling-charts-highcharts-bundle-2.1.4\user-files\simulations\orange\Scenario1.scala) Sources indirectly invalidated by: product: Set(C:\bin\gatling-charts-highcharts-bundle-2.1.4\user-files\simulations\orange\ScenarioCaraibes.scala, C:\bin\gatling-charts-highcharts-bundle-2.1.4\user-files\simulations\esrifrance\Geoprocessing.scala) binary dep: Set() external source: Set() 17:10:57.292 [DEBUG] i.g.c.ZincCompiler$ - All initially invalidated sources: Set(C:\bin\gatling-charts-highcharts-bundle-2.1.4\user-files\simulations\orange\ScenarioCaraibes.scala, C:\bin\gatling-charts-highcharts-bundle-2.1.4\user-files\simulations\orange\ScenarioFibre.scala, C:\bin\gatling-charts-highcharts-bundle-2.1.4\user-files\simulations\esrifrance\Geoprocessing.scala, C:\bin\gatling-charts-highcharts-bundle-2.1.4\user-files\simulations\orange\Scenario1.scala) 17:10:57.315 [INFO] i.g.c.ZincCompiler$ - Compiling 4 Scala sources to C:\bin\gatling-charts-highcharts-bundle-2.1.4\target\test-cl asses… 17:10:57.891 [DEBUG] i.g.c.ZincCompiler$ - Running cached compiler 27e4203e, interfacing (CompilerInterface) with Scala compiler ver sion 2.11.5 there is no error and then the available simulations are: Choose a simulation number: [0] computerdatabase.BasicSimulation [1] computerdatabase.advanced.AdvancedSimulationStep01 [2] computerdatabase.advanced.AdvancedSimulationStep02 [3] computerdatabase.advanced.AdvancedSimulationStep03 [4] computerdatabase.advanced.AdvancedSimulationStep04 [5] computerdatabase.advanced.AdvancedSimulationStep05 [6] esrifrance.Geoprocessing Scenario1.scala ScenarioFibre.scala ScenrarioCaraibes.scala are not compiled. The esrifrance.Geoprocessing was not modifed and work fine. the scala file are long scenario. I check the faq hint about that ---
**Author:** ![arnaud\_ferrand](https://avatars.discourse-cdn.com/v4/letter/a/dbc845/32.png) [@arnaud\_ferrand](https://community.gatling.io/u/arnaud_ferrand)\ **Post date:** [January 29, 2015, 5:01pm UTC](https://community.gatling.io/t/cant-choose-my-scenario/1948/5 "2015-01-29T17:01:43Z")
This is a size issue: 17:53:22.466 [ERROR] i.g.c.ZincCompiler$ - C:\bin\gatling-charts-highcharts-bundle-2.1.4\user-files\simulations\orange\ScenarioFibre .scala:7: Could not write class orange/ScenarioFibre because it exceeds JVM code size limits. Method scala/concurrent/duration/packa ge$DurationInt’s code too large! 17:53:22.467 [ERROR] i.g.c.ZincCompiler$ - class ScenarioFibre extends Simulation { 17:53:22.468 [ERROR] i.g.c.ZincCompiler$ - ^ 17:53:22.474 [ERROR] i.g.c.ZincCompiler$ - one error found 17:53:22.475 [DEBUG] i.g.c.ZincCompiler$ - Compilation failed (CompilerInterface) I keep only the smallest scenario. and got this error. The FAQ reports “Can’t compile long scenarios” : _Since 2M3, Gatling forks a new process for running so compiler, so that one can tune JVM differently for compiler and running. The compiler JVM can be tuned with a parameter named `gatling.core.zinc` in [gatling.conf](https://github.com/gatling/gatling/blob/master/gatling-core/src/main/resources/gatling-defaults.conf#49)._ but the **gatling-defaults.conf** does not expose the zinc {} allowed structure to tune the spawned JVM . ---
**Author:** ![arnaud\_ferrand](https://avatars.discourse-cdn.com/v4/letter/a/dbc845/32.png) [@arnaud\_ferrand](https://community.gatling.io/u/arnaud_ferrand)\ **Post date:** [January 29, 2015, 11:50pm UTC](https://community.gatling.io/t/cant-choose-my-scenario/1948/6 "2015-01-29T23:50:52Z")
I solve my problem using singleton object for each chain and a singleton object for all headers. Each small scala compilation unit is now compiled and the simulation is available ! ---
**Author:** ![slandelle](https://dub1.discourse-cdn.com/flex013/user_avatar/community.gatling.io/slandelle/32/4_2.png) [@slandelle](https://community.gatling.io/u/slandelle)\ **Post date:** [January 30, 2015, 6:42am UTC](https://community.gatling.io/t/cant-choose-my-scenario/1948/7 "2015-01-30T06:42:42Z")
Yep, you managed to create a class so big that it was exceeding the maximum Java class size. Could you please open an issue? We could probably directly generate the Simulation the way you modified it. ---
**Author:** ![arnaud\_ferrand](https://avatars.discourse-cdn.com/v4/letter/a/dbc845/32.png) [@arnaud\_ferrand](https://community.gatling.io/u/arnaud_ferrand)\ **Post date:** [January 30, 2015, 9:22am UTC](https://community.gatling.io/t/cant-choose-my-scenario/1948/8 "2015-01-30T09:22:18Z")
OK I will do this