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Hello Diarmaid, I'm not sure what error you are encountering, as I'm able to run the program you provided without error. I'm testing in linux, but can try to recreate on an OSX system if need be. First, however, I wanted to double-check a few things with you. What versions of netCDF-C and netCDF-Fotran are you using? Can you provide the config.log file for one or both of these installations? Does 'make check' work properly, e.g. do the built-in tests work for you? Also, what version of HDF5 are you using? This information should help me figure out what's going on, or if it's at least something dependent on your system. In the meantime, I will attempt to recreate this on OSX. -Ward > Hi > > I am trying to use netCDF to store large sequenced data, which is > large datasets (think 1000 x 1,000,000 x2 = 2,000,000,000 records > or larger). When I try to write this to a variable in netCDF (using > the HDF5 interface) I get a segmentation fault. When I try to write > it using the 64bit classic netCDF I get a error of "NetCDF: One or more > variable sizes violate form= at constraints". > > Is my array just too big? And if it is, is it filesystem dependant? > (I am on Mac El Capitan). > > I've attached my program so you can see if you can reproduce the error. > > Thanks for your help > Diarmaid > > The University of Edinburgh is a charitable body, registered in > Scotland, with registration number SC005336. > > Ticket Details =================== Ticket ID: MNE-528365 Department: Support netCDF Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.