Yoni, You may want to reduce the circuit by finding the transfer functions and then use controlled voltage and current sources. Look up the LAPLACE keyword in your HSPICE manual. Regards, Craig Clewell FCI Electronics -----Original Message----- From: Yoni Tzafrir [mailto:yonitz@xxxxxxxxxxxxx] Sent: Wednesday, October 09, 2002 5:24 AM To: Si-List (E-mail) Subject: [SI-LIST] how to reduce hspice run-time? hi, we are running 12 i/o buffers, connecting to a sub-file which simulates a packge (with capacitors and all), driving another 12 i/o (used as receivers) through 12 transmision lines (the receivers connects to a package too). the pc runs it for 1 hour. it is pantium 4 1.8GHz, with 0.5GB RAM. is there a way to reduce the time that the simulation runs? maybe reducing timestep? how do i do it? it is important since we are planing on running much more than 12 buffers. yoni Yonatan (Yoni) Tzafrir phone : (972) - 3 - 7552300 (T/L: 351) mobile: (972) - 54 - 459469 fax: (972) - 3 - 6177130 e-mail: yonitz@xxxxxxxxxxxxx ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu