[Disksim-users] Segmentation Fault !!!
Abdullah Al-Dahlawi
dahlawi at IEEE.ORG
Fri Dec 10 16:50:00 EST 2010
Greeting
Can any one gibe me a feedback why I am getting a "segmentation fault" error
when modifying a 3disk.parv faile to include an ssd device ?????????
Here my modified PARV file
# 3disks.parv
# John Bucy/20021210
# 3 different disks on 1 controller
# ---------------------------------------------------------
disksim_global Global {
Init Seed = 42,
Real Seed = 42,
# Statistic warm-up period = 0.0 seconds,
Stat definition file = statdefs
}
# ---------------------------------------------------------
disksim_stats Stats {
iodriver stats = disksim_iodriver_stats {
Print driver size stats = 1,
Print driver locality stats = 0,
Print driver blocking stats = 0,
Print driver interference stats = 0,
Print driver queue stats = 1,
Print driver crit stats = 0,
Print driver idle stats = 1,
Print driver intarr stats = 1,
Print driver streak stats = 1,
Print driver stamp stats = 1,
Print driver per-device stats = 1 },
bus stats = disksim_bus_stats {
Print bus idle stats = 1,
Print bus arbwait stats = 1 },
ctlr stats = disksim_ctlr_stats {
Print controller cache stats = 1,
Print controller size stats = 1,
Print controller locality stats = 1,
Print controller blocking stats = 1,
Print controller interference stats = 1,
Print controller queue stats = 1,
Print controller crit stats = 1,
Print controller idle stats = 1,
Print controller intarr stats = 1,
Print controller streak stats = 1,
Print controller stamp stats = 1,
Print controller per-device stats = 1 },
device stats = disksim_device_stats {
Print device queue stats = 0,
Print device crit stats = 0,
Print device idle stats = 0,
Print device intarr stats = 0,
Print device size stats = 0,
Print device seek stats = 1,
Print device latency stats = 1,
Print device xfer stats = 1,
Print device acctime stats = 1,
Print device interfere stats = 0,
Print device buffer stats = 1 },
process flow stats = disksim_pf_stats {
Print per-process stats = 1,
Print per-CPU stats = 1,
Print all interrupt stats = 1,
Print sleep stats = 1
}
} # end of stats block
# ---------------------------------------------------------
#disksim_iosim IS {
# I/O Trace Time Scale = 1.0
#} # end of iosim spec
# ---------------------------------------------------------
disksim_iodriver DRIVER0 {
type = 1,
Constant access time = 0.0,
Scheduler = disksim_ioqueue {
Scheduling policy = 3,
Cylinder mapping strategy = 1,
Write initiation delay = 0.0,
Read initiation delay = 0.0,
Sequential stream scheme = 0,
Maximum concat size = 128,
Overlapping request scheme = 0,
Sequential stream diff maximum = 0,
Scheduling timeout scheme = 0,
Timeout time/weight = 6,
Timeout scheduling = 4,
Scheduling priority scheme = 0,
Priority scheduling = 4
}, # end of Scheduler
Use queueing in subsystem = 1
} # end of DRV0 spec
# ---------------------------------------------------------
disksim_bus BUS0 {
type = 1,
Arbitration type = 1,
Arbitration time = 0.0,
Read block transfer time = 0.0,
Write block transfer time = 0.0,
Print stats = 0
} # end of BUS0 spec
# ---------------------------------------------------------
disksim_bus BUS1 {
type = 1,
Arbitration type = 1,
Arbitration time = 0.0,
Read block transfer time = 0.0512,
Write block transfer time = 0.0512,
Print stats = 1
} # end of BUS1 spec
# ---------------------------------------------------------
disksim_bus BUS2 {
type = 1,
Arbitration type = 1,
Arbitration time = 0.0,
Read block transfer time = 0.0512,
Write block transfer time = 0.0512,
Print stats = 1
} # end of BUS2 spec
# ---------------------------------------------------------
disksim_bus BUS3 {
type = 1,
Arbitration type = 1,
Arbitration time = 0.0,
Read block transfer time = 0.0512,
Write block transfer time = 0.0512,
Print stats = 1
} # end of BUS3 spec
# ---------------------------------------------------------
disksim_bus BUSHBA {
type = 2,
Arbitration type = 1,
Arbitration time = 0.001,
# PCI-E, with 8 lanes with 8b/10b encoding gives 2.0 Gbps per
# lane and with 8 lanes we get about 2.0 GBps. So, bulk sector
# transfer time is about 0.238 us. SATA/300 can transfer data
# at 300 MBps, which amounts to about 1.6276 us per byte.
Read block transfer time = 0.0002384,
Write block transfer time = 0.0002384,
#Read block transfer time = 0.0016276,
#Write block transfer time = 0.0016276,
Print stats = 1
} # end of BUSHBA spec
# ---------------------------------------------------------
disksim_ctlr CTLR0 {
type = 1,
Scale for delays = 0.0,
Bulk sector transfer time = 0.0,
Maximum queue length = 0,
Print stats = 1
} # end of CTLR0 spec
# ---------------------------------------------------------
# don't change the order of the following parameters.
# we use Flash chip elements and Elements per gang to
# find number of gang -- we need this info before initializing
# the queue (disksim_ioqueue)
ssdmodel_ssd SSD {
# vp - this is a percentage of total pages in the ssd
Reserve pages percentage = 15,
# vp - min percentage of free blocks needed. if the free
# blocks drop below this, cleaning kicks in
Minimum free blocks percentage = 5,
# vp - a simple read-modify-erase-write policy = 1 (no longer
supported)
# vp - osr write policy = 2
Write policy = 2,
# vp - random = 1 (not supp), greedy = 2, wear-aware = 3
Cleaning policy = 2,
# vp - number of planes in each flash package (element)
Planes per package = 8,
# vp - number of flash blocks in each plane
Blocks per plane = 2048,
# vp - how the blocks within an element are mapped on a plane
# simple concatenation = 1, plane-pair stripping = 2 (not tested),
# full stripping = 3
Plane block mapping = 3,
# vp - copy-back enabled (1) or not (0)
Copy back = 1,
# how many parallel units are there?
# entire elem = 1, two dies = 2, four plane-pairs = 4
Number of parallel units = 1,
# vp - we use diff allocation logic: chip/plane
# each gang = 0, each elem = 1, each plane = 2
Allocation pool logic = 1,
# elements are grouped into a gang
Elements per gang = 1,
# shared bus (1) or shared control (2) gang
Gang share = 1,
# when do we want to do the cleaning?
Cleaning in background = 0,
Command overhead = 0.00,
Bus transaction latency = 0.0,
# Assuming PCI-E, with 8 lanes with 8b/10b encoding.
# This gives 2.0 Gbps per lane and with 8 lanes we get about
# 2.0 GBps. So, bulk sector transfer time is about 0.238 us.
# Use the "Read block transfer time" and "Write block transfer time"
# from disksim_bus above.
Bulk sector transfer time = 0,
Flash chip elements = 8,
Page size = 8,
Pages per block = 64,
# vp - changing the no of blocks from 16184 to 16384
Blocks per element = 16384,
Element stride pages = 1,
Never disconnect = 1,
Print stats = 1,
Max queue length = 20,
Scheduler = disksim_ioqueue {
Scheduling policy = 1,
Cylinder mapping strategy = 0,
Write initiation delay = 0,
Read initiation delay = 0.0,
Sequential stream scheme = 0,
Maximum concat size = 0,
Overlapping request scheme = 0,
Sequential stream diff maximum = 0,
Scheduling timeout scheme = 0,
Timeout time/weight = 0,
Timeout scheduling = 0,
Scheduling priority scheme = 0,
Priority scheduling = 1
},
Timing model = 1,
# vp changing the Chip xfer latency from per sector to per byte
Chip xfer latency = 0.000025,
Page read latency = 0.025,
Page write latency = 0.200,
Block erase latency = 1.5
} # end of SSD spec
# ---------------------------------------------------------
# HP_C3323A
source atlas10k.diskspecs
source ibm18es.diskspecs
source cheetah9LP.diskspecs
# ---------------------------------------------------------
# component instantiation
instantiate [ statfoo ] as Stats
instantiate [ statfoo ] as Stats
instantiate [ quantum ] as QUANTUM_TORNADO_validate
instantiate [ ibm ] as IBM_DNES-309170W_validate
instantiate [ seagate ] as SEAGATE_ST39102LW_validate
instantiate [ ssd0x0 ] as SSD
instantiate [ bus0 ] as BUS0
instantiate [ bus1 ] as BUS1
instantiate [ bus2 ] as BUS2
instantiate [ bus3 ] as BUS3
instantiate [ busHBA0 ] as BUSHBA
instantiate [ driver0 ] as DRIVER0
instantiate [ ctlr0 ] as CTLR0
# ---------------------------------------------------------
# system topology
topology disksim_iodriver driver0 [
disksim_bus bus0 [
disksim_ctlr ctlr0 [
disksim_bus bus1 [
disksim_disk
quantum []
],
disksim_bus bus2 [
disksim_disk
ibm []
],
disksim_bus bus3 [
disksim_disk
seagate []
],
disksim_bus busHBA0 [
ssdmodel_ssd
ssd0x0 []
]
]
]
]
# no syncsets
# ---------------------------------------------------------
disksim_logorg quantumorg {
Addressing mode = Parts,
Distribution scheme = Asis,
Redundancy scheme = Noredun,
devices = [ quantum ],
Stripe unit = 17938986,
Synch writes for safety = 0,
Number of copies = 2,
Copy choice on read = 6,
RMW vs. reconstruct = 0.5,
Parity stripe unit = 64,
Parity rotation type = 1,
Time stamp interval = 0.000000,
Time stamp start time = 60000.000000,
Time stamp stop time = 10000000000.000000,
Time stamp file name = stamps
} # end of logorg org0 spec
# ---------------------------------------------------------
disksim_logorg ibmorg {
Addressing mode = Parts,
Distribution scheme = Asis,
Redundancy scheme = Noredun,
devices = [ ibm ],
Stripe unit = 17916240,
Synch writes for safety = 0,
Number of copies = 2,
Copy choice on read = 6,
RMW vs. reconstruct = 0.5,
Parity stripe unit = 64,
Parity rotation type = 1,
Time stamp interval = 0.000000,
Time stamp start time = 60000.000000,
Time stamp stop time = 10000000000.000000,
Time stamp file name = stamps
} # end of logorg org0 spec
# ---------------------------------------------------------
disksim_logorg seagateorg {
Addressing mode = Parts,
Distribution scheme = Asis,
Redundancy scheme = Noredun,
devices = [ seagate ],
Stripe unit = 17783240,
Synch writes for safety = 0,
Number of copies = 2,
Copy choice on read = 6,
RMW vs. reconstruct = 0.5,
Parity stripe unit = 64,
Parity rotation type = 1,
Time stamp interval = 0.000000,
Time stamp start time = 60000.000000,
Time stamp stop time = 10000000000.000000,
Time stamp file name = stamps
} # end of logorg org0 spec
# ---------------------------------------------------------
disksim_logorg org0 {
Addressing mode = Array,
Distribution scheme = Striped,
Redundancy scheme = Noredun,
# vp - added more ssd elements
devices = [ ssd0x0 ],
Stripe unit = 128,
Synch writes for safety = 0,
Number of copies = 2,
Copy choice on read = 6,
RMW vs. reconstruct = 0.5,
Parity stripe unit = 128,
Parity rotation type = 1,
Time stamp interval = 0.000000,
Time stamp start time = 60000.000000,
Time stamp stop time = 10000000000.000000,
Time stamp file name = stamps
} # end of logorg org0 spec
#--------------------------------------------------------------
*********************************************************************************
The output file has no error , however, a "segmentation error is generated
when executing the simulator !!!
Here is my output file .....
*** Output file name: abdullah.out
*** Input trace format: validate
*** I/O trace used: cheetah9LP.trace
*** Synthgen to be used?: 0
disksim_global Global {
Init Seed = 42,
Real Seed = 42,
Stat definition file = statdefs
} # end of Global spec
disksim_stats Stats {
iodriver stats = disksim_iodriver_stats {
Print driver size stats = 1,
Print driver locality stats = 0,
Print driver blocking stats = 0,
Print driver interference stats = 0,
Print driver queue stats = 1,
Print driver crit stats = 0,
Print driver idle stats = 1,
Print driver intarr stats = 1,
Print driver streak stats = 1,
Print driver stamp stats = 1,
Print driver per-device stats = 1
},
bus stats = disksim_bus_stats {
Print bus idle stats = 1,
Print bus arbwait stats = 1
},
ctlr stats = disksim_ctlr_stats {
Print controller cache stats = 1,
Print controller size stats = 1,
Print controller locality stats = 1,
Print controller blocking stats = 1,
Print controller interference stats = 1,
Print controller queue stats = 1,
Print controller crit stats = 1,
Print controller idle stats = 1,
Print controller intarr stats = 1,
Print controller streak stats = 1,
Print controller stamp stats = 1,
Print controller per-device stats = 1
},
device stats = disksim_device_stats {
Print device queue stats = 0,
Print device crit stats = 0,
Print device idle stats = 0,
Print device intarr stats = 0,
Print device size stats = 0,
Print device seek stats = 1,
Print device latency stats = 1,
Print device xfer stats = 1,
Print device acctime stats = 1,
Print device interfere stats = 0,
Print device buffer stats = 1
},
process flow stats = disksim_pf_stats {
Print per-process stats = 1,
Print per-CPU stats = 1,
Print all interrupt stats = 1,
Print sleep stats = 1
}
} # end of Stats spec
disksim_iodriver DRIVER0 {
type = 1,
Constant access time = 0.0,
Scheduler = disksim_ioqueue {
Scheduling policy = 3,
Cylinder mapping strategy = 1,
Write initiation delay = 0.0,
Read initiation delay = 0.0,
Sequential stream scheme = 0,
Maximum concat size = 128,
Overlapping request scheme = 0,
Sequential stream diff maximum = 0,
Scheduling timeout scheme = 0,
Timeout time/weight = 6,
Timeout scheduling = 4,
Scheduling priority scheme = 0,
Priority scheduling = 4
},
Use queueing in subsystem = 1
} # end of DRIVER0 spec
disksim_bus BUS0 {
type = 1,
Arbitration type = 1,
Arbitration time = 0.0,
Read block transfer time = 0.0,
Write block transfer time = 0.0,
Print stats = 0
} # end of BUS0 spec
disksim_bus BUS1 {
type = 1,
Arbitration type = 1,
Arbitration time = 0.0,
Read block transfer time = 0.051200,
Write block transfer time = 0.051200,
Print stats = 1
} # end of BUS1 spec
disksim_bus BUS2 {
type = 1,
Arbitration type = 1,
Arbitration time = 0.0,
Read block transfer time = 0.051200,
Write block transfer time = 0.051200,
Print stats = 1
} # end of BUS2 spec
disksim_bus BUS3 {
type = 1,
Arbitration type = 1,
Arbitration time = 0.0,
Read block transfer time = 0.051200,
Write block transfer time = 0.051200,
Print stats = 1
} # end of BUS3 spec
disksim_bus BUSHBA {
type = 2,
Arbitration type = 1,
Arbitration time = 0.001000,
Read block transfer time = 0.000238,
Write block transfer time = 0.000238,
Print stats = 1
} # end of BUSHBA spec
disksim_ctlr CTLR0 {
type = 1,
Scale for delays = 0.0,
Bulk sector transfer time = 0.0,
Maximum queue length = 0,
Print stats = 1
} # end of CTLR0 spec
ssdmodel_ssd SSD {
Reserve pages percentage = 15,
Minimum free blocks percentage = 5,
Write policy = 2,
Cleaning policy = 2,
Planes per package = 8,
Blocks per plane = 2048,
Plane block mapping = 3,
Copy back = 1,
Number of parallel units = 1,
Allocation pool logic = 1,
Elements per gang = 1,
Gang share = 1,
Cleaning in background = 0,
Command overhead = 0.0,
Bus transaction latency = 0.0,
Bulk sector transfer time = 0,
Flash chip elements = 8,
Page size = 8,
Pages per block = 64,
Blocks per element = 16384,
Element stride pages = 1,
Never disconnect = 1,
Print stats = 1,
Max queue length = 20,
Scheduler = disksim_ioqueue {
Scheduling policy = 1,
Cylinder mapping strategy = 0,
Write initiation delay = 0,
Read initiation delay = 0.0,
Sequential stream scheme = 0,
Maximum concat size = 0,
Overlapping request scheme = 0,
Sequential stream diff maximum = 0,
Scheduling timeout scheme = 0,
Timeout time/weight = 0,
Timeout scheduling = 0,
Scheduling priority scheme = 0,
Priority scheduling = 1
},
Timing model = 1,
Chip xfer latency = 0.000025,
Page read latency = 0.025000,
Page write latency = 0.200000,
Block erase latency = 1.500000
} # end of SSD spec
source ./atlas10k.diskspecssource ./ibm18es.diskspecssource
./cheetah9LP.diskspecsinstantiate [
statfoo
] as Stats
instantiate [
statfoo
] as Stats
instantiate [
quantum
] as QUANTUM_TORNADO_validate
instantiate [
ibm
] as IBM_DNES-309170W_validate
instantiate [
seagate
] as SEAGATE_ST39102LW_validate
instantiate [
ssd0x0
] as SSD
instantiate [
bus0
] as BUS0
instantiate [
bus1
] as BUS1
instantiate [
bus2
] as BUS2
instantiate [
bus3
] as BUS3
instantiate [
busHBA0
] as BUSHBA
instantiate [
driver0
] as DRIVER0
instantiate [
ctlr0
] as CTLR0
topospec disksim_iodriver driver0 [
disksim_bus bus0 [
disksim_ctlr ctlr0 [
disksim_bus bus1 [
disksim_disk quantum [ ]
],
disksim_bus bus2 [
disksim_disk ibm [ ]
],
disksim_bus bus3 [
disksim_disk seagate [ ]
],
disksim_bus busHBA0 [
ssdmodel_ssd ssd0x0 [ ]
]
]
]
]
disksim_logorg quantumorg {
Addressing mode = Parts,
Distribution scheme = Asis,
Redundancy scheme = Noredun,
devices = [
quantum
],
Stripe unit = 17938986,
Synch writes for safety = 0,
Number of copies = 2,
Copy choice on read = 6,
RMW vs. reconstruct = 0.500000,
Parity stripe unit = 64,
Parity rotation type = 1,
Time stamp interval = 0.0,
Time stamp start time = 60000.000000,
Time stamp stop time = 10000000000.000000,
Time stamp file name = stamps
} # end of quantumorg spec
disksim_logorg ibmorg {
Addressing mode = Parts,
Distribution scheme = Asis,
Redundancy scheme = Noredun,
devices = [
ibm
],
Stripe unit = 17916240,
Synch writes for safety = 0,
Number of copies = 2,
Copy choice on read = 6,
RMW vs. reconstruct = 0.500000,
Parity stripe unit = 64,
Parity rotation type = 1,
Time stamp interval = 0.0,
Time stamp start time = 60000.000000,
Time stamp stop time = 10000000000.000000,
Time stamp file name = stamps
} # end of ibmorg spec
disksim_logorg seagateorg {
Addressing mode = Parts,
Distribution scheme = Asis,
Redundancy scheme = Noredun,
devices = [
seagate
],
Stripe unit = 17783240,
Synch writes for safety = 0,
Number of copies = 2,
Copy choice on read = 6,
RMW vs. reconstruct = 0.500000,
Parity stripe unit = 64,
Parity rotation type = 1,
Time stamp interval = 0.0,
Time stamp start time = 60000.000000,
Time stamp stop time = 10000000000.000000,
Time stamp file name = stamps
} # end of seagateorg spec
disksim_logorg org0 {
Addressing mode = Array,
Distribution scheme = Striped,
Redundancy scheme = Noredun,
devices = [
ssd0x0
],
Stripe unit = 128,
Synch writes for safety = 0,
Number of copies = 2,
Copy choice on read = 6,
RMW vs. reconstruct = 0.500000,
Parity stripe unit = 128,
Parity rotation type = 1,
Time stamp interval = 0.0,
Time stamp start time = 60000.000000,
Time stamp stop time = 10000000000.000000,
Time stamp file name = stamps
} # end of org0 spec
loadparams complete
--
Abdullah Al-Dahlawi
George Washington University
----
Check The Fastest 500 Super Computers Worldwide
http://www.top500.org/list/2010/06/100
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