Nest - A Network Simulation Testbed


            _A_d_d_r_e_s_s:
            Jed Schwartz
            450 Computer Science Building
            Columbia University
            New York,  NY  10027

            _E-_m_a_i_l: jed@douglass.columbia.edu

            _P_h_o_n_e: (212) 854-8192


            _D_e_s_c_r_i_p_t_i_o_n

            The NEST simulation package developed  at Columbia  provides
            a  generic framework for simulating networks and prototyping
            distributed systems.  The NEST  simulation runs  in  a  sin-
            gle   UNIX   process,  and   the   NEST  monitor  runs  in a
            separate process, which  may  be  remote.   Simulations  are
            created  using  the NEST library, a C-language library which
            runs under the all UNIX variants on VAX and 680x0 processors
            (SPARC  and  RT soon).  The library provides a simple, high-
            level message-passing facility among  a  set  of  concurrent
            lightweight  processes  which simulate a distributed system.
            Simulations can be interactively monitored and managed using
            the  standard  Nest  monitor  program, which permits dynamic
            reconfiguration  of  the  simulation.   It  is  possible  to
            create/halt/continue/destroy  simulated nodes and links, and
            to alter their  function and parameters, while a  simulation
            is  in  progress.   Multiple monitors at different sites can
            monitor a single simulation. The  monitor  is  a  monochrome
            SUNView  application  (an  X Windows implementation is under
            development).

            _N_e_t_w_o_r_k _a_c_c_e_s_s

            Both documentation and full sources  are  available  on  the
            Columbia Vax [columbia.edu: 10.3.0.89].

            There are four files in the ~ftp/pub directory:
            _________________________
            The information in this section is provided  in  accor-
            dance  with the copyright notice appearing at the front
            of this guide.




            June 28, 1989               NNSC        Section M.5,  Page 1








            221184 bytes    nest-25-doc.tar  Lineprinter formatted documentation.
            438272 bytes    nest-25-doc2.tar Scribe and PostScript formatted docs.
            339968 bytes    nest-25-src.tar  Source for Nest simulation library.
            208896 bytes    nest-25-disp.tar Source for user interface display.


            _W_h_o _C_a_n _U_s_e _t_h_e _S_e_r_v_i_c_e

            Nest is  available without cost to non-profit  research  and
            educational  organizations  which have access to the  Inter-
            net.   Others may order a tape through mail for  a  cost  of
            $100. by contacting Jed Schwartz at the above address.  Nest
            is made available for research purposes only.   No  part  of
            the  Nest software may be redistributed by itself or as part
            of any software  package,  except  by  express  arrangement.
            For-profit  organizations  and those without Internet access
            may order a Nest tape through mail for a cost  of  $100.  by
            contacting Jed Schwartz at the above address.

            _M_i_s_c_e_l_l_a_n_e_o_u_s _I_n_f_o_r_m_a_t_i_o_n

            Please   direct   technical   questions   to   Alex   Dupuy:
            alex@columbia.edu, (212)854-4290




























            June 28, 1989               NNSC        Section M.5,  Page 2